Noh Ji Wook is a brilliant prosecutor and Eun Bong Hee is a novice trainee at the Ministry of Justice, who always seems to find herself in the most unfortunate and embarrassing situations. Bong Hee is wrongly accused of murdering her ex-boyfriend, and Ji Wook is demoted because he risks his career and reputation to save Bong Hee. Things get more complicated as their careers and love lives become intertwined, but one thing unites them: catching the real culprit behind a series of murders before time runs out and they end up getting killed. Ji Eun Hyuk was a close friend of Ji Wook’s, and their friendship was as strong as ever. During Eun Hyuk’s troubled childhood, Ji Wook felt like his only family.