Ah Chong (Chow Yun-Fat) is a hitman whose latest job takes a wrong turn when, during a shootout at a lavish nightclub, he accidentally blinds singer Jennie (Sally Yeh) by firing his gun too close to her eyes. Racked with remorse, Ah Chong decides to retire from his life of crime and help Jennie get a cornea transplant. But when Ah Chong's rancorous former boss betrays him, Ah Chong receives an unexpected helping hand from hot-headed police detective Lee Ying (Danny Lee).

The Killer is not simply about action but is a film that is rich in powerful themes, driven by complex and interesting characters, beautiful cinematography and an iconic musical score - 4K restored.