Seventeen years ago, an assassin ambushes triad boss Yau. Yau’s wife, Nam, sends Chai, Kam and others to find the assassin. Chai catches the assassin and discovers that he is Meow, Chai and Kam’s childhood best friend. To save his friend, Chai helps Meow flee Hong Kong. Though Yau survives the attack, the injuries leave him crippled for the rest of his life.