MZ-generation sisters Hee-jeong and Eun-jeong use an app to find a personal PT teacher to help them lose weight. Both sisters fall in love with their teacher, Ji-hoon, at first sight. The two sisters compete with each other to seduce Ji-hoon to take over.
| Actor | Role |
|---|---|
 Soo HeeNot listed | Not listed |
 White SugarNot listed | Not listed |
 Min Do-yoonNot listed | Not listed |
 Im Tae-mokNot listed | Not listed |