An undercover policeman infiltrates a major drug ring and works his way to the position of heir apparent. When the leader of the syndicate becomes ill, the lure of power and money cause him to question his true identity.

Title from container. Originally released as a motion picture in 2007. Special features: Feature commentary by Hong Kong cinema expert, Bey Logan; The making of Protege; Undercover and over the edge: an exclusive interview with leading man Daniel Wu; Chasing the dragon: an exclusive interview with leading lady Zhang Jing Chu; The dealer: an exclusive interview with producer Peter Chan; original theatrical trailer. Chinese - Cantonese collection.