A woman seeks to take revenge when her younger sister disappears and she finds out that her sister suffered violence and sexual abuse from school bullies.
No Mercy is a 2019 South Korean action film directed by Im Gyeong-taek. Produced by Nam Kwon-woo and Jung Suk-hyun, it features Lee Si-young, Park Se-wan and Lee Joon-hyuk in lead roles. It was released on January 1, 2019.