Lethal Weapons of Love and Passion is a Hong Kong television series based on Huang Yi's novel Fuyu Fanyun.

Pong Ban (Derek Kok) mercilessly defeated three monks who protected the Rain-Ceasing Sword.

The surviving monk took the sword and fled when Long Fan-Wan (David Chiang) arrives to stop Pong Ban.

Fung Heng-Lit (Raymond Lam), the Mongol prince, lost his childhood memories during a massacre by Emperor Zhu.

Pong Ban tries, by all means, to regain Heng-Lit's childhood memory and groom him into being a prince, hoping that Heng-Lit may lead the Mongol rebels in a campaign to overthrow the Ming Dynasty.