ARE YOU HUMAN?

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 robot, are shocked to see each other. Meanwhile, Seo Jong Gil orders a man to assault Nam Sin to get rid of him and take PK group for himself.

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 Hoon feels shocked. Meanwhile, Gun Ho, the CEO of PK group, tries to fill in for Sin’s presentation of their Driverless Car Project, but Mr. Seo gives the presentation instead.

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. Jo’s help, but that is stopped too. However, a fire breaks out at the club. So Bong ends up stuck beneath collapsed debris, but Namsin helps her out.

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 and takes him elsewhere. After hearing this, Jong Gil gets suspicious and barges into the operation room where Namsin is.

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 about her, so they keep an eye out for her. Meanwhile, So Bong follows Young Hoon to PK hospital after hearing his conversation on the phone.

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, Laura, and Young Hoon out of his way. Meanwhile, So Bong gets sure about what she saw and sets up a plan with Ms. Jo to get evidence to prove that she was right.

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 Sin and So Bong follow the driverless vehicle, they realize that something has gone terribly wrong.

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 Sin. However, So Bong insists that she should meet Mr. Seo. Meanwhile, Laura tells Young Hoon not to let Namsin get near the driverless car.

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 end, she tries to leave PK group and Namsin. Meanwhile, the chairman rushes his plans to make Nam Sin and Ye Na get married to each other.

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 continue helping him. However, Ye Na becomes jealous of this and tries to start living with Nam Sin’s house. Meanwhile, So Bong tells Mr. Seo about Ye Na to get rid of her.

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 if Jong Gil is sure about what he had heard and tells Namsin. Meanwhile, Jong Gil tries to confirm what he heard by threatening Ho Yun with her child.