Noh Ji Wook is a prosecutor in the Central District Prosecutors’ Office who ends up switching professions to a private attorney. He harbors a trauma stemming from an event in his childhood involving his parents and his first love. Eun Bong Hee, a Taekwondo athlete in her youth, is a prosecutor trainee who has become a murder suspect. Eun Bong Hee and Noh Ji Wook both find themselves being the focus of a killer.
Noh Ji Wook, a brilliant prosecutor, and Eun Bong Hee, a rookie intern prone to embarrassing situations, become entangled when Bong Hee is falsely accused of murder, and Ji Wook risks his career to help her. As their careers and love lives intersect, they must work together to catch the true culprit behind a series of murders before it's too late. Meanwhile, Ji Wook's former close friend, Ji Eun Hyuk, reappears, adding complexity to their already troubled relationship.