Liu Jing (Stephen Chow), a mainland youth who has had supernatural powers in his right arm since childhood, encountered bad luck one after another soon after arriving in Hong Kong. First, his wallet was stolen, and then his luggage was robbed. However, he also met the bohemian Xiaosa (Kenny Bee). Liu Jing looked for a job everywhere, but was undecided for a long time, and was even involved in gang fights. When they were desperate, Liu Jing and Xiaosa decided to participate in a Sanda competition, and by chance they joined the Zhaodong Boxing Gym, which was a gangster in nature. Under the leadership of the gangster master (Cheng Kui'an), the two accompanied Master Huo Huan to attack the Huo Family Boxing Gym at night. With this opportunity, Liu Jing was able to become a disciple of Master Huo. Both of them had a good impression of the master's daughter Jiamin (Zhang Min), which also made a lot of jokes. However, the senior brother (Yin Yangming) under the door was jealous of Liu Jing and framed him, causing Liu Jing to be expelled from the school. Where will his future go...