Overview
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 | Age then | Age now | |
|---|---|---|---|
 | - | - | |
 | - | - | |
 | 40 | 42 | |
 | - | - |