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 Cheng Kwai-on), they set out to raid the Huo family boxing gym led by Master Huo, where Liu Jing had the chance to become Master Huo's disciple. Both of them developed feelings for Master Huo's daughter Jia Min (played by Cheung Man), leading to many humorous situations. However, the senior disciple (played by Yin Yang Ming) was envious of Liu Jing and plotted against him, resulting in Liu Jing being expelled from the school. What will his future hold...
