Yoo Jin falls in love with Joon Sang as a young girl. After losing him in an accident, she decides to marry her childhood friend. However, Yoo Jin meets someone looking exactly like her lost love, putting her in a bind.

A performance on stage takes place between stars Romi and Min-jeong in Japan. A woman named Ara wanders around the performance hall looking for her friend Min-jeong and goes into Romi's waiting room by accident. Ara doesn't recognize Romi, and Romi finds Ara attractive, but Muse is the only man she thinks of.