Iron Monkey teams up with his blind friend Jin to bring underworld agent the Tiger to justice. When Jin's son arrives he soon becomes caught up in the conflict, leading to Jin's death. Jin's son now joins the Iron Monkey to avenge his father's memory, as they launch an attack on the Tiger's lair.

China, 1915. A secret and unequal treaty that would increase Japan's dominance over China is about to be signed unwillingly but not before external forces jump in to make sure it never happens. Therefore both the US and a small band of thieves and orphans (among them Lau Sek-Ming and Alexander Lo Rei) are ordered by their foster father (Zhang Feng-Yi) to track it down in Shanghai. Feeling an unease in terms of their involvement in high politics all of a sudden, it becomes clear there's a traitor in the group...

Brothers Fay and Fong arrive in Shanghai dreaming of a future. They end up in the Horng Men gang, and Fong is sentenced to prison while his brother rises through the ranks. On an undercover mission in rival gang, Fay is killed and his brother seeks revenge.

While visiting Shanghai, handsome young developer Hong meets the beautiful Kwun. Together they embark on a search for his friends from home, a brother and sister, who have become the targets of a ruthless gang leader, Keung. Now embroiled in a brutal criminal war with gambling and a seductive nightclub singer at the center, the innocents must fight to survive as the stakes rise to include their own lives!