Jung Yu-mi

 Lee Jin-wook

 Kim Ji-seok

 Kim Ji-woo

Joo Yeol-mae was in a 12 year on-and-off relationship with her boyfriend Yoon Seok-hyun, before they broke up for the fifth time 3 years ago. This is mainly because Seok-hyun keeps her at arm's length and does not want to get married. However, even after they break up, Yeol-mae and Seok-hyun remain friends and are present in each other's lives. Enter Shin Ji-hoon, an alluring new love interest who shakes up Yeol-mae’s world and lands her in a love triangle. Torn between two men, can Yeol-mae find true romance, or will she lose it all?