Liang Zan (Yuen Biao) is the only son of the Liang family for nine generations. He has loved martial arts since he was a child. In order to develop his son's hobby, Liang Zan's father hired various famous teachers from the rivers and lakes to fight with Liang Zan. However, these teachers had long been bribed by Liang Zan's father. During the competition, they pretended to be defeated, making Liang Zan think that his kung fu was invincible. One day, Liang Zan met Liang Erdi. During the competition, Liang Zan lost miserably and knew his true level. He then worshipped Liang Erdi as his teacher and learned the short bridge swimming spring. Later, he received the true teachings of Liang Erdi's senior brother and realized the long bridge swimming spring. After some hard work and practice, Liang Zan's martial arts really improved greatly. He returned to Foshan and opened a medical clinic to give medicine to the poor. One day, the prince's adopted son Ni Fei visited and wanted to fight with Liang Zan. The prince was afraid that his adopted son would be injured, so he took the lead in sending assassins to assassinate Liang Zan.