No Mercy is a 2021 South Korean action-thriller film directed by Im Kyung-Taek. The film revolves around Kim In-ok, a woman who seeks revenge after her younger sister, Ah-ram, disappears and she finds out that her sister suffered violence and sexual abuse from a group of school bullies led by Min-ho.
Kim In-ok, portrayed by Lee Si-young, is a former military officer who now works as a physical therapist. She is devastated when her sister Ah-ram, portrayed by Park Se-wan, goes missing without a trace. As In-ok begins to investigate, she discovers that her sister was the victim of extreme bullying and sexual abuse by a group of high schoolers led by Min-ho, portrayed by Choi Jin-ho.
Determined to seek justice for her sister, In-ok takes matters into her own hands and sets out to track down the culprits. With her military training and combat skills, she becomes a force to be reckoned with and takes on each of the bullies one by one. As she gets closer to Min-ho, she realizes that there may be more to his involvement in her sister's disappearance than she initially thought.
Throughout the film, In-ok faces numerous obstacles and challenges, including corrupt officials and dangerous gangsters. The action is intense and visceral, with numerous fight scenes and stunts that showcase Lee Si-young's physical abilities.
No Mercy is a gritty and emotionally charged revenge thriller that explores themes of trauma, justice, and sisterhood. The film highlights the pervasive issue of school bullying in South Korea and its devastating impact on young people and their families.
