After Oh Laura loses her son, Nam Sin, to her father in law, Nam Gun Ho, she creates an AI robot that looks exactly like Nam Sin. Nam Sin grows up to...

Nam Sin goes to Czech Republic to find his mother, Oh Laura. Oh Laura goes to the market with Namsin. At the market, both Nam Sin and Namsin, the...

Young Hoon, Sin’s personal secretary, follows Sin into Czech Republic. After seeing Nam Sin in a coma and Oh Laura taking care of him, Young...

So Bong barges into the presentation room and tries to argue with Nam Sin, but she fails. She tries to argue with him again at a club with Ms....

Namsin gets praised as a hero after saving people’s lives at the fire accident. However, as the ambulance takes him, Laura stops the ambulance...

So Bong asks Namsin to take her in as his personal bodyguard, and Namsin decides to take her in. However, Namsin and Young Hoon are still suspicious...

So Bong is shocked to see there is another person that looks just like Nam Sin. She reports to Mr. Seo, but he only cares about taking Nam Sin,...

Namsin makes So Bong think that she was mistaken. Meanwhile, the test driving of the driverless car is held in front of many reporters. However, as...

So Bong is shocked to learn that a robot has been pretending to be Nam Sin. Young Hoon tries to persuade her to keep the secret about Namsin3 and Nam...

So Bong has found out the true identity of Namsin3, but he treats her like a friend. The more he does that, So Bong becomes uncomfortable. In the...

So Bong is shocked to be suddenly kissed by Namsin3. In the end, she realizes that Namsin had no bad intentions on this action and decides to...

Jong Gil overhears Chairman Nam throwing a fit as his dementia kicks in, so he tries to confirm what he overheard. Young Hoon asks Ye Na to find out...

Namsin tells Chairman Nam that he doesn’t have dementia. Jong Gil becomes sure that Chairman Nam has dementia and tells So Bong to stay silent...

Everyone is surprised as Ye Na suddenly steps up and rushes getting married with Nam Sin. So Bong’s father hears about this and visits PK Group...

Chairman Nam finds Laura and tries to persuade her. However, Laura strongly rejects doing anything for Chairman Nam, so Chairman Nam keeps an eye on...

Laura and Young Hoon only care about the human, Nam Sin. However, So Bong thinks that is unfair for Namsin even if he’s just a robot. Jong Gil...

Namsin starts to think and act on his own after So Bong leaves him. Laura becomes worried that Namsin’s identity as a robot might get revealed...

So Bong just can’t forget about Namsin after turning her back on him. She ends up visiting Laura’s hideout to meet him. Namsin is very...

Namsin leaves the wedding ceremony on his own to save So Bong. After saving So Bong, he chases after Jong Gil’s agent. Laura become furious...

Jong Gil gets more and more suspicious about the true identity of Namsin. Namsin tries to know more about So Bong after becoming friends with her....

Laura is overwhelmed with joy as she finds out that Sin is getting better. However, she gets more nervous as Namsin continues to make decisions on...

So Bong is upset to see Namsin continuing to listen to Laura without knowing that he has a kill switch installed in himself. Jong Gil finds where Ye...

So Bong confesses her love at the presentation, but unexpected events continue to occur. Nam Sin sees Laura after 20 years, but he acts coldly to her...

After hearing So Bong’s love confession, Namsin tries harder to understand and feel emotions. However, Sin is more frustrated after meeting...

Nam Sin becomes more and more angry as he gets rejected by So Bong and realizes how Laura really feels about Namsin. This makes him call Jong Gil to...

Nam Sin knows that everyone has done what they did for his own good, but he gets so angry that he says harsh things to Young Hoon. Chairman Nam...

Nam Sin feels threatened by the robot Namsin and decides to go to work even if he hasn’t fully recovered yet. So Bong continues to work as Nam...

Nam Sin becomes angrier as he continues to find Namsin’s traces everywhere he goes. He tries to get rid of such traces and find a way to make...

Nam Sin becomes furious as he realizes that Chairman Nam has known that he had been replaced by a robot. His anger leads him to ask Laura if there...

Jong Gil calls out Nam Sin by saying he has something to tell him. Another error occurs in Namsin’s system, and he sees a hallucination of So...

Nam Sin abuses the manual mode and makes Namsin attack Chairman Nam. However, things don’t go as Sin has planned. Jong Gil overhears that...

Nam Sin makes Chairman Nam sign the stock transfer agreement papers and becomes the new chairman of PK Group. However, Young Hoon suddenly returns to...

Namsin3 reveals his identity at the company meeting. Everyone in the room is surprised, but they leave with satisfaction after hearing about his...

So Bong prepares a surprise party for Namsin3. Jae Shik takes Namsin3 to a spa, and Namsin3 picks up his gift for So Bong. Nam Sin finds the kill...

Namsin3 gets framed for murdering Laura and goes into hiding with So Bong. Nam Sin get heartbroken by hearing that his mother is dead. Ye Na’s...

Namsin3 realizes that the kill switch has been reactivated and tells David about it. So Bong ends up finding out about this as well and tries to stop...