A man wakes up missing his memories. Directed by a mysterious voice from a device in his ear, he sets off on a hostage rescue mission rife with danger.

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.

Jae-ho, who aims to become the number one in a crime organization, gets to build up trust with Hyun-su, an ambitious newbie in the prison. While they try to take over the organization after the prison release, their ulterior motives starts to emerge.

After being suspended as Interpol officers, San and Yo find themselves in trouble when a terrorist bombing turns them into wanted suspects and a rival group of bounty hunters sets out to find them.