After spending 15 years consumed by revenge, a woman loses all her memories in a sudden accident, and as she searches for her past, she’s drawn toward a dangerous truth she never expected.

A niece who lost her parents and grew up in the hands of an uncle who runs a shopping mall faces a new truth after her uncle's sudden death.

Detective Ma Seok-do changes his affiliation from the Geumcheon Police Station to the Metropolitan Investigation Team, in order to eradicate Japanese gangsters who enter Korea to commit heinous crimes.