Yumi's Saturday afternoon schedule is called off when she is just about to leave. She tries to find an alternative, but it doesn't go as she wishes.

Yoonhee, waiting for her best friend Soojin, goes into Soojin's house only to encounter Soojin's boyfriend, Hyunsoo.

Instead of repaying a debt, Jungsik is asked to kill Jaeyoung, a woman who seems to be in a similar situation to him. Jeongsik, who has never killed a person before, sees an opportunity to kill Jaeyoung, but it's not easy to follow through.