The six that held hands with K, the absolute evil, for survival at the crossroads of good and evil live lavish lives in return for Min Do Hyuk's betrayal. However, they are slaves to K and have lost their freedom. Meanwhile, Min Do Hyuk opens his eyes out of a coma he fell into from the explosion he suffered on the rooftop.

Matthew promotes TIKITAKA's new missing children application, Children Home. During the campaign, Myoung Ji's daughter, Erica, gets abducted. Meanwhile, the movie preview is just around the corner, and Monet worries that the mistakes she made in her life will get exposed to the world. Although she tries to stop the preview from showing, the preview event opens its doors.

Min Do Hyuk removes his mask and shows himself to Sim Jun Seok, who can't believe he is alive. He is furious that Do Hyuk's trickery got him to clear the charges against him, and he gathers everyone to uncover the traitor. However, Do Hyuk makes his move by winning the hearts of the public, who go crazy over him and his story.

After rescuing No Han Na, Min Do Hyuk's plan to ensure her safety has Matthew scrambling to find her. The whole country watches as the remaining time runs out. Matthew accuses Mone of working with Min Do Hyuk but gives her a chance to prove her life is worth keeping. Meanwhile, Hwang Chan Sung watches Mone closely with a helping hand.

At Mone and Chan Sung's engagement party, Matthew tries to get close to Chan Sung, but Chan Sung shuts him down. With Chan Sung at her back, Mone exposes how La Hui and Matthew had kept their eyes on her. Meanwhile, Do Hyuk and Ki Tak break into Matthew's secret room and access LUCA to gain critical data for their next attack.

La Hui risks getting exposed and stops Matthew from killing Do Hyuk and Ki Tak. Matthew believes Chan Sung is Medusa and puts Mone on her second mission. Meanwhile, Chan Sung reveals himself as Medusa to Do Hyuk and asks him to join hands against Matthew. However, Do Hyuk senses something isn't right.

Geum La Hui takes matters into her own hands after getting revealed as Medusa. She begins to trap those involved in Da Mi's death one by one, and ultimately herself, to be judged and punished. Meanwhile, Min Do Hyuk continues to help Mone, which disturbs Chan Sung.

After leaving a letter for Ki Tak, Geum La Hui starts the game of survival that she plans to broadcast live over Save's network. However, Chan Sung has plans of his own and takes advantage. Meanwhile, Ki Tak races to stop La Hui and save Do Hyuk after he reads La Hui's letter of regret.

The Seoul mayor by-elections are nearing, but Yang Jin Mo trails behind in his campaign. Luckily, Hwang Chan Sung lends his help for something in return. Meanwhile, Mo Ne succumbs to Chan Sung to locate her mother, who she thought was dead, and Do Hyuk reclaims Sungchan Group to take on TIKITAKA and Save.

After the wedding, Mo Ne can't believe what she discovers at Chan Sung's house and hopes she can save her mother. However, she can only succumb to Chan Sung's demands and rely on Min Hyuk with a plan. With Han Na in Chan Sung's hands, Jin Mo seeks help from Min Hyuk and twists Matthew's plans. Meanwhile, Min Hyuk uses Ju Ran and Chul Woo to turn Matthew and Chan Sung against each other.

After getting shot by Matthew, Go Myoung Ji struggles to hang on to her life with Jin Mo and the rest of the people by her side. Meanwhile, Matthew finds a way to escape police custody with Chan Sung's help and tries to manipulate the public in his favour. Later, Do Hyuk and the rest commit to a press conference to expose their sins and corner Matthew.

Matthew tries to stop Min Do Hyuk's press conference, but it's too late. However, he doesn't give up. Meanwhile, the reporters agree to reveal the evil deeds that stemmed from the Bobble incident and promise to expose Matthew's true identity. Later, Min Do Hyuk becomes Sungchan Group's chairman and reveals himself as Chairman Sim's biological heir.

Do Hyuk pushes forward with his plans to expose Matthew and starts by releasing S-CURI, an app that safeguards users' secret chats from being spied on. Matthew pours all his effort and money into proving his identity as Lee Hwi So. Meanwhile, Mone works with Do Hyuk to turn Chan Sung against Matthew.

Yang Jin Mo dies. He leaves his heart for Go Myoung Ji and saves her life. Matthew uses his power and connections to make Min Do Hyuk look like Yang Jin Mo's murderer. Meanwhile, Min Do Hyuk comes up with a new plan, and Han Mo Ne is there to help him.

Despite Mo Ne's involvement in Da Mi's death, Ki Tak saves her from Chan Sung's wrath and keeps her out of harm's way. However, Ki Tak gets taken hostage by Matthew as she makes her getaway. Upon discovery of Chan Sung's murder, Matthew gets the upper hand by framing Do Hyuk as the murderer and destroys his plan. Meanwhile, Myoung Ji recovers and plots her revenge.