It's the 1940s, and the notorious Axe Gang terrorizes Shanghai. Small-time criminals Sing and Bone hope to join, but they only manage to make lots of very dangerous enemies. Fortunately for them, kung fu masters and hidden strength can be found in unlikely places. Now they just have to take on the entire Axe Gang.

Zen, an autistic teenage girl with powerful martial arts skills, gets money to pay for her sick mother Zin's treatment by seeking out all the people who owe Zin money and making them pay.

Tien is captured and almost beaten to death before he is saved and brought back to the Kana Khone villagers. There he is taught meditation and how to deal with his Karma, but very soon his arch rival returns challenging Tien for a final duel.

Chi Mo Sai (Yuen Wah) meets Wong (Roger Kwok) in Auntie Fei's (Yuen Qiu) cafe and learns that Wong has photographic memory. He decides to exploit this skill by teaching Wong how to play Mahjong, but Fei, Wong's boss, strongly objects to it. Despite Fei's objections, Wong learns Mahjong from compulsive gambler Chi Mo Sai. He impresses t...