Once upon a time, the rover whose name is Ah-Lung became friend with the young man called Tiger and Lung was invited by Tiger to join his family. When he arrived to Tiger`s family`s handyman he enjoyed his new life, however Tiger offended Wong who is short tempered son of a notorious gangster, Lung must protect himself from the gangsters. Later Lung and Tiger forced to join the young women who is pursued by Wong after Wong`s gang killed her family at the acrobatic troupe. Ah-Lung shares his martial art knowledge with his new friends he met in order to defeat Wong and his thugs.