Overview
Struggling artist Min Hee-do is offered three billion won to bet his life to a game against a rich old man, Kang No-sik, who is dying from a terminal illness. The game is for each man to dial a random phone number and guess if the person who answers will be male or female. Hee-do loses the bet, and after a month long brain operation, he wakes up to find that they have swapped bodies.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 33 | 51 | |
 | 65 | September 18, 2023 (81) | |
 | 45 | 62 | |
 | 42 | 60 | |
 | 19 | 37 | |
 | - | - | |
 | 29 | 46 | |
 | 60 | 78 | |
 | 27 | 45 |