\”The Wanderer\” tells the story of the stunt actor Cha Dajian, played by Lee Seung-ki, who was involved in a tragic crash. In the process, a nationwide corruption scandal was finally discovered. Gao Haili, played by Bae Suzy, is the eldest daughter of a Marine Corps soldier. She dreams of becoming a civil servant, but in order to support her mother and younger siblings, she decided to serve as a secret agent of the National Intelligence Agency.