From Kim Won Seok, the writer of Descendants of the Sun, a drama about a special bodyguard with a background in special investigations and the Hallyu star he is supposed to protect.
Man to Man (Season 1)

Ghost Agent K (Episode 1) 9.5
Air date: 2017-04-21
Runtime: 66 min
Overview: 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.

Working for Un Gwang (Episode 2) 9.0
Air date: 2017-04-22
Runtime: 68 min
Overview: 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.

Visiting Chairman Victor (Episode 3) 9.0
Air date: 2017-04-28
Runtime: 65 min
Overview: 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.

Did You Think I Liked You? (Episode 4) 8.0
Air date: 2017-04-29
Runtime: 64 min
Overview: From Chairman Victor's private collection of precious cultural artefacts, a wood carving catches Seol-Woo's eye. Then the power suddenly goes out.

Go with Your Feelings (Episode 5) 9.0
Air date: 2017-05-05
Runtime: 67 min
Overview: 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

Goldfinger Is Back (Episode 6) 8.0
Air date: 2017-05-06
Runtime: 67 min
Overview: 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.

From This Moment, I Resign (Episode 7) 9.0
Air date: 2017-05-12
Runtime: 62 min
Overview: 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.

Being a Bodyguard Was a Disguise (Episode 8) 9.0
Air date: 2017-05-13
Runtime: 63 min
Overview: 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.

The Black Auction Mission (Episode 9) 8.0
Air date: 2017-05-19
Runtime: 61 min
Overview: 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.

An Agent's Tactic (Episode 10) 8.0
Air date: 2017-05-20
Runtime: 64 min
Overview: 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.

Finding the Mole (Episode 11) 8.0
Air date: 2017-05-26
Runtime: 68 min
Overview: 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.

The Path (Episode 12) 9.0
Air date: 2017-05-27
Runtime: 65 min
Overview: All sides involved, including Lee Dong-hyun, Mo Seung-jae and the National Intelligence Service, are continuing the search for the missing videotapes.

A Message From "Y" (Episode 13)
Air date: 2017-06-02
Runtime: 61 min
Overview: 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.

Lovers Tactic (Episode 14)
Air date: 2017-06-03
Runtime: 65 min
Overview: 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.

Only the Truth Can Save You (Episode 15)
Air date: 2017-06-09
Runtime: 66 min
Overview: 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.

Life Must Go On (Episode 16)
Air date: 2017-06-10
Runtime: 69 min
Overview: 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.

Seasons

Episodes 16