A pair of evil gung-fu artists, Heaven and Earth, are slaughtering the entire Yin-Yang brotherhood. he movie opens with two members of the brotherhood and their two male children being chased by Heaven, Earth, and misc. bad guys. The two members get away separately with their children. Twenty years later we see Jackie Chan as he hunts frogs and snakes and keeps them in his pants. You learn he was one of the boys; the other is a lazy man who uses windmill-driven levers to deliver things to and from bedside, even a chamberpot and breakfast. Eventually, their respective paternal figures are killed, and they are forced to fight Heaven and Earth.

This sequel has virtually nothing to do with the original Fearless Hyena directed by Jackie Chan himself. This sequel only has the same title and it is Lo Wei's last effort to gain some profits using fame of Jackie. Jackie did shoot only few scenes before he followed advices of his manager and moved to Golden harvest. Then Lo Wei put together all the scenes Jackie already had made and made some new footage using a Jackie-Chan-look-a-like. Despite of Jackie Chans popularity Fearless Hyena was a commercial failure. Jackie Chan wanted Lo Wei to stop releasing this very Dissapinting film but could not do it because Lo Wei was the legal owner of the films.