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.

Amid a tense inheritance fight, a charming heir clashes with his hardworking employee who's known for her irresistible smile — which he cannot stand.

Ban Ji-eum can endlessly reincarnate. But when her 18th life gets cut short, she dedicates the next one to finding her now grown-up childhood love.

Gyeongseong, 1945. In Seoul's grim era under colonial rule, an entrepreneur and a sleuth fight for survival and face a monster born out of human greed.