No Mercy

Park Eun Hye (Park Se Wan), a mentally challenged orphan, is brutally tricked by her classmates and falls victim to violent gangsters who hold her captive and abuse her. Her older sister, Park In Ae (Lee Si Young), a former champion martial artist recently released from prison, learns of her sister's horrific situation and vows to rescue her at any cost. Facing a dangerous underworld of armed and ruthless criminals, In Ae uses her exceptional fighting skills to confront the mobsters who have traumatized her vulnerable sister. Her determination and combat prowess become her greatest weapons in a high-stakes rescue mission that will test her limits and challenge the criminal underworld. This is a 2019 South Korean action thriller directed by Im Kyung Taek.