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.

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 about it. Meanwhile, Namsin finds out about Hee Dong’s secret and offers a deal to Ho Yun. However, Namsin gets in trouble as he becomes unable to resupply his battery on time.

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 out of anger. Meanwhile, So Bong feels uncomfortable as Ye Na keeps mistreating Namsin. This makes her step up to stop Ye Na from mistreating Namsin.

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 her just in case. Meanwhile, everybody is surprised to see that Namsin is showing unexpected behavior. This causes Ye Na to take a step further in rushing her wedding.

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 starts to suspect So Bong and gives her a warning and one last mission. Meanwhile, Namsin goes out to find So Bong as he can’t find her location since her phone gets turned off.

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 as he starts to continue to show unexpected actions. This makes her meet So Bong herself. Meanwhile, Jong Gil’s agent follows Laura and finds out that So Bong might be deeply involved with her.

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 happy to see her again, but So Bong only tells him that he should do as Laura and Young Hoon tells him to do. Meanwhile, Jong Gil sends out his agent to find out what secrets So Bong holds.