"SPL: Kill Zone" is a Hong Kong action film released in 2005, directed by Wilson Yip. The movie stars Donnie Yen as a tough police officer who is determined to take down a ruthless gang involved in drug trafficking. The film is known for its intense action sequences and martial arts choreography, showcasing Yen's skills as a fighter. The plot revolves around the moral dilemmas faced by law enforcement as they confront the violent underworld. As the story unfolds, themes of loyalty, sacrifice, and the consequences of crime are explored, making it a gripping watch for action film enthusiasts.