Lei Gang (Lin Jiahua) was originally the best martial arts master in Guangzhou, but he lost to Huang Feihong (Jiang Dawei) in a duel, and his reputation was ruined and he was infected with leprosy. Lei Zhenglong (Huang Zongze) is Lei Gang's apprentice. He blamed Huang Feihong for his master's downfall and went to seek revenge. Unexpectedly, Huang Feihong taught him a set of Lei family interpretation methods, which touched Lei Zhenglong. By chance, Huang Feihong met Mo Langgui (Liu Xuan) and You Sanshui (Ma Guoming) in a teahouse. Although his adoptive father forbade them to practice martial arts, Huang Feihong secretly taught them martial arts. You Sanshui's purpose of practicing martial arts was very simple, that is, to attract the attention of Sunflower (Chen Fala), but Sunflower's mind was all on Lei Zhenglong. At the same time, Huang Feihong and Mo Langgui gradually developed a deep relationship, which made Lei Zhenglong, who had been pursuing Mo Langgui, feel very uncomfortable.