Brothers A Yong (played by Man Tsz-leung) and A Guo (played by Andy Lau) wander the streets of Hong Kong and join the underworld boss Zi Ge (played by Chow Yun-fat). Because A Guo was appreciated by Brother Zi, A Yong was jealous, and there was a gap between the brothers. Ah Yong fell in love with Boss Zhu, but Ah Guo went to Singapore to make another living. A few years later, A Yong's wings...