Noh Ji-wook, a prosecutor, and Eun Bong-hee, a trainee prosecutor, come close when they work on a murder case. Things take a turn when Bong-hee finds herself to be the murder suspect.
Jang Hee-joon's father, a prominent attorney, chooses Ji-wook as the prosecutor in his son's murder case. Ji-wook's career is at risk if he can't get a conviction.
The prime murder suspect Jung Hyun-su is adamant about having Bong-hee represent him. On the other hand, Cha Yoo-jung, Ji-wook's ex-girlfriend, is the prosecutor on the case.
A heartbroken Bong-hee resolves to reset her feelings. Although Ji-wook searches for the defendant's alibi, he is still suspicious about his intentions and questions his innocence.