Jang Tae-ho and Lee Dong-hyun discuss Song Mi-eun and her past: She decided to marry Mo Seung-jae, not for his wealth but for her own survival.

We meet Kim Seol-woo during a hostage situation, where he takes out the hostage takers against orders. He's recruited by the NIS to become a ghost agent: deeply planted into organizations, fake identities and operating discreetly.

All sides involved, including Lee Dong-hyun, Mo Seung-jae and the National Intelligence Service, are continuing the search for the missing videotapes.

The police find the vehicle involved in the hit-and-run accident. Determined to kill off the bad guys, Seol-woo gets his gun from his workroom.

For Seol-woo, it's finally time for revenge. For all involved, it's finally time for closure and for punishments to be given where they are due.

For Seol-woo, it's finally time for revenge. For all involved, it's finally time for closure and for punishments to be given where they are due.

From Chairman Victor's private collection of precious cultural artefacts, a wood carving catches Seol-Woo's eye. Then the power suddenly goes out.

Do-ha asks to hear the truth directly from Seol-woo. Meanwhile, Dong-hyun and Seol-woo begin preparation for their next mission, the Black Auction.

Seol-woo doesn't pick up Do-ha's phone calls, so she decides to check his workroom. Dong-hyun visits Jang Tae-ho and asks if he knows where K is.

Seol-woo gets drunk and sends cute text messages, all in the name of his mission. Meanwhile, Congressman Baek tries to make a deal with Jang Tae-ho.

Neither Woon-Gwang nor his chief celeb manager Cha Do-Ha likes his new bodyguard. If the can't make him leave, they'll just make him want to leave.

For his next task, Seol-woo must get close to Do-ha, but it isn't so easy when she has forbidden him to approach her within a 1-meter radius

Jang Tae-ho lays down his conditions to Mo Seung-jae. For their new mission to commence, Seol-woo and Do-ha must first get the approval of Un-kwang.

After leavening that Woon-Gwang has been involved in a similar accident before, Seol-Woo relays his suspicions to Lee Dong-Hyun, his comrade and mentor.

To stop Seol-woo from blowing his cover, Dong-hyun tells him to stay out of the investigation. However, Seol-woo continues his search for the culprit.

For the country and Do-ha's father, Un-kwang decides to help Seol-woo. Do-ha, not able to trust Seol-woo, requires him to sign a contract.