This is the story of a big businessman named ”Min Kyu” who has a deadly sickness.
He was allergic to humans, and if he touched one, blisters sprang on his body.
Min Kyu was fed up with his sickness; his body turned crimson, and he was having difficulties breathing.
He wants to live his life like a regular human being, and he also wants to have a buddy.
He wants to marry, but he used to stay alone due of his sickness, so he closed himself in the house for ten years.
Min Kyu receives his therapy at home. One day, his doctor visits home and begs Min Kyu to live with his sickness.
Because there was no solution for his illness, meantime, he offers him a wristwatch to wear.
There were several hues that would indicate the state of his illness.
In blue, the allergy will be normal; in yellow, there will be a little attack; and in orange, Min Kyu’s veins will cease working.
As long as there is red, he will die. One day, a scientist called Hong contacts Min Kyu.
He claims that he and his team have created a robot that functions similarly to a human.
Min Kyu will not have an allergic reaction even if he touches her.
The scientist Hong informs her that the price of this robot is 100 billion dollars.
The following day, Min Kyu went to the lab and was astonished to discover the robot, which was constructed while presenting a nice face.
Min Kyu touches her, but nothing happens, and he is pleased to witness this.
Min Kyu was eager to acquire the Aji 3 robot once it told her its name.
He has spent a lot of money on this robot.
The next day, the scientists were testing the robot, when one of them bounced a soda bottle.
A drop falls on Aji 3 and causes a massive short circuit, damaging the robot’s processing system.
The system with which she works, seeing this, the entire team becomes concerned since they have to give Aji 3 to Min Kyu.
Because they have taken money from him, the team feels it will take a long time to fix it, and their contract will also be cancelled.
Here, Hong has an idea, he made Aji 3 by giving her the look of her old buddy, Jia.
He rushes to see her and tells her the full story; his goal was to send Jia, a genuine human, as a robot to Min Kyu.
She first rejects when she hears about the situation, but when Hong offers her money, she agrees because she is destitute.
The scientist’s team brings Jia to the lab and makes her understand everything about robot Aji 3 and how she functions.
how she stands up, how she offers water, etc. Later, they have her wear the same clothing as the robot.
Hair extensions and lenses were inserted into her eyes, serving as a camera through which they will spy on Jia and Min.
Jia was sent to Min Kyu’s residence after preparing her as a robot.
Jia is terrified to see Min Kyu as he opens the casket; yet, Jia had just delivered meals to Min Kyu a few days prior.
But Min Kyu didn’t enjoy the dish, so he didn’t pay Jia. When Jia tried to stop her, Min Kyu fled away.
Jia was unable to touch him due to his allergy, but Min Kyu is unaware of this.
Now he phones Hong and asks about Jia’s dread and rage; upon hearing this, Hong tells him a story.
It states that the Aji 3 robot has two modes: operational and buddy mode.
In operational mode, she grows irritated, but in buddy mode, she behaves like a person.
Furthermore, he claims there is a button behind her neck; only click it and everything will be OK.
Min Kyu does the same and tests Jia, which indicates she was a robot in front of him.
Min Kyu wants to test if she works well or not, and the light in Hong’s lab shuts off.
Jia is now left to manage everything on her own because Hong is unable to reach her. Min Kyu invites her to open a package.
Something she has to open with a mathematical code, but Jia is not very good at arithmetic, so she breaches the rules.
The next assignment was to peel off a boiled egg in 10 seconds, and Jia worked in a restaurant.
So she effortlessly passed this test. Min Kyu is pleased with all of this and considers keeping her with him.
The light enters Hong’s lab and connects with Jia’s lenses; they notice Jia cursing at Min Kyu.
Because he lays his hand on her back to check the battery. Min Kyu phones Hong and says, “You’re cheating me.”
since the battery of this robot is destroyed, but he claims there is nothing like this.
If you notice a problem with this robot’s battery, please bring it to me and I will fix it.
If you touch her, you risk causing a short circuit.
After that, Min Kyu walks to his kithcen to sip water, but abruptly stops breathing. Jia rushes to him and pats his back.
This makes him feel better for a time, and he wonders how you accomplished it without my order.
She claims that I have several functions and that with their assistance, I can complete tasks on my own.
Min Kyu touches Jia for the first time, but to his surprise, nothing happens.
There was no allergic response, despite the fact that Jia was an ordinary human pretending to be a robot in front of him.
At night, Hong summons Jia to the lab under the guise of replacing the battery and says, “You know, you were about to trick us all.”
What will happen if Min Kyu finds the truth? This makes Jia upset and believes she did not execute her job correctly.
So she departs. After thereafter, Hong and his colleagues discover that Aji 3 was shipped to Africa for maintenance.
where it would take two weeks, at the same moment, Hong receives a call from Min Kyu.
He says he likes the robot Aji 3 you built and wants to keep it for a month.
Hong doesn’t understand, so what will he do?
He calls Jia again and wants her to continue pretending to be a robot in front of Min Kyu for a few days.
He gives her a large sum in exchange and adds that we would take you back into the room each night under the guise of charging you.
Jia was ready to become a robot again after hearing this.
One day, Jia went to the restroom and was cleaning it with Min Kyu’s costly scents
Meanwhile, Min Kyu approaches her and says, “Robots can’t go near water like this, so how are you doing all this?”
Jia responds as a robot: I am a sophisticated robot that can do everything.
As Min Kyu was ready to turn, he noticed perspiration on Jia’s face.
However, when he turns around again, his foot slips on some soap and injures his back.
Similarly, when cleaning one day, Jia destroys Min Kyu’s card home, which he had built over a decade before.
Min Kyu becomes enraged when he sees it, and Jia claims that my battery is only 5 percent charged and attempts to shut down.
Min Kyu phones Hong at home and wonders what’s wrong with his robot. I am facing a loss due of her faults.
Hong says, “Give me some time, I’ll fix it.” One day, an important visitor of Min Kyu was coming, therefore he forbade Jia from going out
Actually, his special visitor was a girl that Min Kyu admired greatly.
When the female arrives to his house and caresses Min Kyu’s shoulder while greeting him.
He has an allergic reaction, and the girl is unaware of his illness, so he creates an excuse for a meeting and flees inside the home.
He attempts to get to the room where his allergy shots are, but he is unable to administer them due to weakness.
Jia notices this and approaches Min Kyu, who is asleep and lying down.
From here, we are told the account of Min Kyu’s life before the disease, when he was well.
Min Kyu became thrilled when he created his first house of cards; one day, it was Min Kyu’s birthday celebration.
Everyone was together and cheerful. Min Kyu returned home with his parents from the celebration.
His balloon came in front of the car, so he didn’t notice the trcuk approaching from the front, and their automobile had an accident.
Min Kyu’s parents perished in the accident, and a large crowd came for their burial.
and attempted to become Min Kyu’s guardians; however, they were not interested in Min Kyu and were hiding behind his father’s land.
One day, Min Kyu receives a message from Madam X, about whom we shall learn more.
”Son, you don’t have to sign any paperwork” was written.
One day, he was sitting alone, when his friend came to him with adoption paperwork.
He says, “Look, sign these papers, and then you’ll become my brother,” and Min Kyu signs the papers.
However, when he sees his friend’s hand transformed into a wicked hand, he becomes terrified and flees.
Now his friend returns to his father and hands him documents; however, Min Kyu has written something else instead of his signatures.
Min Kyu returns home and begins living alone because he believes that others are nasty and behind his property.
Since then, he was allergic to humans, and no one knew this save his special doctor.
With this, the plot turns to the present, and Min Kyu regains his wits.
He discovers Jia alongside him and says, “I had a dream that everyone was my enemy,” and he is shocked that he is well.
He starts spending more time with Jia, and one day he goes to see the girl he likes.
The female again shakes hands with Min Kyu while departing, and he has an allergy response, so he tries to administer his injection.
But then he realizes how long he would spend his life like this, so he goes to toss his injection into the ocean.
Meanwhile, Jia comes to him, and his allergy is resolved without the need for an injection.
The temperature of his clock was likewise normal, with a blue tint. They were returning home when Min Kyu collides with a guy.
However, nothing occurs to him, and despite this, he does not feel he has recovered.
Now, to test if he is okay, he chooses to venture into the crowd with Jia, something he has never done before.
He collides with a youngster again, but nothing happens; even when a guy touches him, nothing happens.
He contacts his doctor and says I am well now; nevertheless, a guy strikes him, and Jia was not with him at the time.
Min Kyu suffers another allergic reaction, but he recovers when he notices Jia standing in the distance.
Min Kyu tells the doctor on call that he has seen someone and is alright.
The doctor was also startled to hear all of this. Min Kyu goes to Jia and says, “I will buy the largest battery in the world for you.”
You’ll be with me forever. When he gets home, he tells the doctor everything again, and the doctor responds, “Min Kyu, I’m shocked.”
that you are alright without the injection. Now Min Kyu has Jia with him at all times.
For him, she was still a robot. On the other hand, it is demonstrated in the lab that the actual Aji 3 robot has mended.
However, it would take a little longer to operate effectively. When Jia learns that the Aji 3 robot has been repaired, she gets upset.
Because she is now accustomed to live with Min Kyu. One day, Min Kyu brings Jia to the hotel.
When the girl Min Kyu likes arrives with her father, he makes Jia sit at another table.
Jia dislikes this and does not speak to Min Kyu when he returns.
Min Kyu also discovered that he is alright till Aji 3 robot, which implies Jia will be with him.
One day, he stops at a petrol station and touches the worker’s hand while accepting the credit card.
However, nothing occurred to him when he saw that someone had touched him.
He reports this to his doctor, and he replies you’ve gotten OK, so return that robot back that you kept at home.
He was talking about Jia, but Min Kyu has fallen in love with her.
He goes to Hong and tells him what is in his heart. Hong responds you are talking about a robot that was already developed.
But Min Kyu asks, what should I do? I’m going mad; how can I forget her?
Hong claims there is a method, I will remove all of that robot’s memories as a result, she will forget everything.
You also relocate somewhere else. Jia was transformed into an Aji 3 robot and dispatched to Min Kyu for the last time.
They stare at each other, and there is snow outside, so they go for a stroll for the final time.
When they arrive home, Min Kyu praises Jia for making him feel better and makes her wear his mother’s necklace.
Later, he holds her and weeps heavily while hitting the reset button.
On the opposite side, the Aji 3 robot discovers that Min Kyu’s folder has been wiped, and they mourn a lot while missing each other.
Jia weeps so hard that she gets unwell. The next morning, they began a new life, and Jia was eager to visit her grandmother.
She was seated in the train, and Min Kyu, coincidentally, reached the same train after seeing Jia.
And he says the female looks like an Aji 3 robot; they were seated in front of each other but didn’t communicate.
Jia was barred from talking to Min Kyu. He phones Hong and says, “I saw a face like your robot.”
He responds, “Yes, I gave that robot a special one’s face.” Min Kyu then asks, “Can I talk to that person?”
He answers no and disconnects the phone, but Min Kyu doubts and chases Jia to the spot.
She works and lives with her granny.
Her grandmother operates a motel; everyone had departed except Min Kyu, who sat and waited for her.
Jia gets fired up and replies sure; my face was offered to Aji 3 in exchange for a large sum of money.
After hearing all of this, she urges him to go, but Min Kyu wants to stay with her and makes friends with her grandmother in a few days.
and he spends all of the time with Jia that he believed he spent with the robot Aji 3.
When he returns one day, he finds Jia missing from the hotel; she had fled her grandmother’s house.
Now he seeks for her like mad but then finds her by the seaside; he notices the locket in Jia’s neck.
Jia tries to hide the three robots he handed to Aji, but Min Kyu discovers them.
His situation was not well, and he realizes that he is tricked; his allergy level has reached the red hue.
This had never happened to him before; he fell, and he had a few chances to survive.
Meanwhile, the doctor and Hong arrive, and they transport him home while administering an injection.
He was treated, and Jia wanted to see Min Kyu and tell him everything, but the doctor forbade her.
When Min Kyu recovers, he is approached by a special assistant who requests that he launch a complaint against Jia and Hong’s firm.
that they cheated him, we discover that the assistant was actually Jia’s brother, who quit Min Kyu’s employment following Jia’s adultery.
Min Kyu goes to Hong’s team and evacuates their lab after they cheat him.
On the opposite side, Jia was busy preparing and bringing meals for Min Kyu.
However, Min Kyu was upset with her and threw her meals out on a daily basis.
Jia responds, “Do whatever you want; I will come every day to give you food.” Min Kyu was missing Jia as he went to sleep at night.
He walks out to his servant, who is sitting by the fire, and says, “Have you ever lied to me?” Tell me.
The servant responds no, but everyone tells some falsehoods in their lives. The next morning, Jia brought meals for Min Kyu.
However, her bike is involved in an accident with a guy, causing her hand to be wounded.
Min Kyu feels agitated when Jia fails to arrive on time, as he adores her very much.
Jia arrives at night instead of day and lays the food on his table according to schedule.
She was about to leave when Min Kyu approached and said, “You look so happy while lying and cheating on me.”
Jia said, “Listen to me, I want to tell you so many things,” but Min Kyu was not in the mood to listen.
He breaks the glass angrily; the glass hits Jia’s palm, and her hand begins bleeding.
Even then, she apologizes to Min Kyu and departs. Jia’s buddy visits Min Kyu’s residence in the morning.
She attempts to make him understand, adding, “Leave your ego, or you will be alone and imprisoned in your memories.”
Jia is departing for Australia with Hong’s squad, so stop her. Min Kyu acts normally in front of Jia’s pal.
But I was worried on the inside. The next morning, he arrives to Jia’s apartment and finds Hong’s crew there.
However, he departed in his car and came home. Following that, he watches television and learns that 70 stars will be visible in the sky today.
When he goes to replace his umbrella, he comes upon Jia’s umbrella and is transported back to their love memories.
On the other side, Aji 3 was operating well, and Min Kyu decided to see Jia after realizing that he can’t live without her.
He goes to see Jia on a rock, and Jia claims she acted as a robot.
You were spending your time with a human being, not a robot; in the meantime, Min Kyu misses Jia.
He asks, “Tell me the truth, Jia; how many more lies have you told me?”
How foolish was I to not know the difference between a genuine human and a robot?
Jia says I haven’t told you any other untruth than this; I enjoyed spending time with you.
On this, he invites her to sit close him and adds, “Tell me whatever is in your heart.”
She adds, I recall all the moments we spent together, and I didn’t want to lose you.
And I tried many times to tell you the truth but merely stayed silent since you could get your allergy back.
Because this was only finished when you erased all of your previous memories.
Hearing this, Min Kyu draws Jia closer, but suddenly realizes that he has an allergy and says to Jia, “We were together till here.”
Now, you go your way, and I’ll go mine; I’ll travel far away from everyone, where no one will come near me.
I will start living my life as before, but Jia stops him, she weeps a lot, and pleads, “Please don’t go, I loved you so much.”
And you are the one for whom I was waiting in my life. Hearing this, Min Kyu hugs Jia.
Many stars are seen shattering in the sky. The next morning, they take a lengthy trip.
Min Kyu notices the allergy alert on his watch when he takes a coffee from the cafe.
When he finds Jia sleeping in the car, his allergy returns to normal. He then leaves her off at home and invites her to a meeting shortly.
After that, he returns home and contacts his doctor. The doctor informs Min Kyu that his illness has no remedy.
This disease can strike at any moment and can be treated at any time.
In the following scene, a wealthy guy called Martin approaches Hong and offers to buy Aji 3.
She was OK now; he declares, “I’ll use this robot as a dangerous weapon,” and he purchases her.
Martin really asked Hong’s team to build this robot.
Min Kyu arrives and inquires about Aji 3, but Hong responds that Martin, a hazardous perpetrator, has seized her.
Martin was about to leave with Aji 3 in a large casket, but when he opened it, the robot was not there.
On the other side, we witness the Aji 3 robot walking across the city.
She has no recollections and doesn’t know anything about herself. Min Kyu also goes home.
And a tiny charming robot says ”Hello” as he notices Jia and Hong’s crew cooking in his kitchen.
Jia informs him that she is going, but Min Kyu feels unhappy and begins making reasons that the weather isn’t good.
So they should stay here. Aji 3 is shown watching videos preserved in her.
In one of Martin’s videos, he states he would use her as a lethal weapon; she also views Hong’s team’s film.
in which they all claim you are a nice robot who will make friends with people.
Aji 3 deletes Martin’s video but maintains Hong’s, implying that she has developed a bond with humans in her mind.
In the following scene, we see Min Kyu encountering Madam X, the same lady who penned a message for Min Kyu as a youngster.
“Don’t sign any papers,” and she used to help him all the time. She advises him that Martin is a dangerous man.
It would be useful to many people if we apprehended him; a guy has proof against him.
After that, Min Kyu goes to see that individual and asks him for the evidence.
But the man was terrified, and Min Kyu said, “Look, our police team will protect you, so you don’t have to be scared.”
Now that the individual was ready to present evidence against Martin to Min Kyu, Min Kyu forwarded the material to the police.
Jia also leads Min Kyu to a spot where a large transaction was happening to acquire Aji 3.
However, when Min Kyu arrives, he discovers that the Aji 3 robot is missing.
Martin was also concerned since there were his recordings in Aji 3, and he was afraid that if the police discovered these
He will be arrested, we notice Aji 3 roaming around the roads who don’t know anything about her and sitting beside a beggar on the road.
Then she asks for her address, but everyone was looking for her, including Jia and Min Kyu on the way.
While Hong’s crew was monitoring the CCTV cameras, Martin’s buddies quickly discovered Aji 3’s whereabouts.
Now two strangers approach her and declare, “We are your relatives,” while Aji 3 robot sits in their car.
Meanwhile, police arrive and arrest Martin and his associates, while Hong’s crew returns Aji 3 to their lab.
They were all relieved that they had located Aji 3 and prevented her from falling into the wrong hands.
Jia and Min Kyu were delighted, eating dinner with Hong’s staff, and watching Aji 3 videos.
When she encountered humans outside, Aji 3 did a good job, Hong said I would modify her face.
That night, they all said her farewell together. Min Kyu also reveals everything about himself in front of the media.
that he is allergic to humans, but everything is getting better with time.
He praises people who made him fine, which implies Jia and Hong’s team, and he also says that he will spend a lot of money on a robot.
Telling this, his market shares increased swiftly, and he appeared happy and pleased while making the proper decisions in his life.
He contacts Jia and invites her to meet for dinner; he informs Jia that her brother still does not want to complete the work with him.
and he is prepared to resign. Now Jia meets her brother and discusses this in front of his wife.
on it, his wife stops him from resigning. The next morning, Jia’s brother visits Min Kyu and apologizes.
He has withdrawn his resignation. After some time, the plot resumes with Hong set to debut a new AI robot.
Jia’s brother, on the other hand, advances to the position of manager in Min Kyu’s firm.
Jia is shown demonstrating her company’s lights to clients before heading to meet Min Kyu.
Hong’s crew and Jia’s family were already there. She arrives at his house, and a vehicle stops outside.
Min Kyu, who had become a soldier, was the one who emerged.
Jia gets closer but stumbles, and Min Kyu manages her; he was looking at her, which signifies they had progressed far in their lives.
Min Kyu’s ailment has also been healed.
Following this romantic moment, they are shown traveling to Min Kyu’s house, where everyone is waiting for them.
The series ends here.