Lau Zhai, an initiate into Master Wong Fei Hung's Kung Fu school, impulsively wanders while Wong travels. Lau allies with police chief Panther to topple an opium ring.

While Master Wong Fei Hung is away traveling, the impulsive Lau Zhai (Yuen Biao), an initiate into Wong's Kung Fu school, begins wandering in the town. He soon allies with police chief Panther in order to offer assistance in toppling an opium distribution ring. AKA 'Once Upon a Chinese Hero'