Young man Liu Jing (played by Stephen Chow), who possessed extraordinary strength in his right arm since childhood, faced a series of misfortunes shortly after arriving in Hong Kong. First, his wallet was stolen, then his luggage was robbed. However, these incidents led him to meet the carefree and flamboyant Xiao Sa (played by Ching Ying). Liu Jing searched for a job but struggled to find one, even getting caught up in gang disputes. In a moment of desperation, he and Xiao Sa decided to participate in a Sanda competition, unwittingly joining the Zhao Dong boxing gym, which had ties to the underworld. Under the guidance of their mobsters' master (played by Shing Fui-On), they were taken to raid Master Huo Huan's boxing gym, which allowed Liu Jing to become a disciple of Master Huo. Both Liu Jing and Xiao Sa developed feelings for Master Huo's daughter, Jia Min (played by Cheung Man), leading to many comical situations. However, the head disciple (played by Yip Yuk-Sum) became envious of Liu Jing and plotted against him, resulting in Liu Jing being expelled from the school. What will his future hold...?
