A Cambodian boxer smuggled into Hong Kong is pursued by a hotheaded young cop with serious authority issues in director Sio Cheang's hyper-violent crime thriller. Pang (Edison Chen) is a tattooed street boxer from Cambodia. Spirited away from the Cambodian garbage dumps he once called home and offered the opportunity to rise through the ranks as a fearsome triad hit-man, the ambitious young fighter carries out his first mission with rough but ruthless efficiency. Later, after wandering over to the local landfill and watching as a homeless man brutally rapes his own daughter, Pang murders the abhorrent offender and enters into a tender relationship with the frightened young girl (Pei Pei). As Pang's gentle true nature is gradually awakened by the damaged innocence of his new companion, belligerent young cop Wai (Sam Lee) sets out on a restless crusade to bring the resourceful killer to justice no matter what the cost.