Yoo-lim, who divorced her husband and was preparing for a new start, learns that her daughter, Eun-ah, got raped by boys at school. However, they will not be punished because they are minors. Eun-ah kills herself, and Yoo-lim seeks revenge.
| Actor | Role |
|---|---|
 Yu SeonYoo-lim | Yoo-lim |
 Nam Bo-raEun-ah | Eun-ah |
 Shin Dong-hoYoon Jo-han | Yoon Jo-han |
 Kwon Hyun-sangPark Joon | Park Joon |
| LLee Sang-MinHan Min-goo | Han Min-goo |
 Yu Oh-seongDetective Oh | Detective Oh |
 Choi Dae-chulEx-husband | Ex-husband |
 Hong Seok-binPark Joon's Father | Park Joon's Father |
 Shin Dong-miAhn Hye-soo | Ahn Hye-soo |
| KKim Hyeon-juMusic Teacher | Music Teacher |
 Hwang Sung-woongJi-wook, Young Man in the Swimming Pool | Ji-wook, Young Man in the Swimming Pool |