Hyun-min's younger sister turns heads when she comes by the dorm. Watching Sam and Terris vie for her attention sparks Minnie's annoyance.

A visit from her mother sours Se-wan's mood. During a trip to Hyun-min's house, Sam learns a vexing fact about Minnie's dating history.

Ahead of a talent show, Se-wan surprises Jamie with her singing skills. Sam is driven to action when Minnie meets a new love interest.