Infernal Affairs III

In 1991, SP Yeung Kam Wing graduated with honors and became a police officer. Twelve years later, he was sent to work with Lau, who was suspicious of Yeung's intentions. Yeung's past as a police officer was revealed, and he was shot by Lau, who had been deceived by a fake tape. Despite being critically injured, Yeung managed to shoot Lau back, but ultimately succumbed to his wounds. The story concludes with a psychologist reflecting on the fates of Yeung, Chan, and Lau, and the inspector paying his respects to his fallen colleagues.