Internationally-acclaimed star Jackie Chan is Buck Yuen, a less-than-successful exercise equipment salesman who yearns for excitement in his life. One day, Buck Yuen follows his instincts and trails two-suspicious-looking men into action and foils their plans. The resulting publicity from Buck Yuen's heroism brings him to the attention of a private investigator who informs him that he is actually the long-lost son of a wealthy businessman. Hoping to reunite with his true family, Buck Yuen travels to Korea where his father lies dying.