Qi Rufeng, a great warrior, takes in Fang Gang, the son of Fang Cheng, a servant who sacrificed his life to save his own, and teaches him
martial arts, and wants to make him the master. Ru Feng's daughter, Qi Pei, who was in love with Fang Gang, joined forces with her senior brother to fight with Fang, and did a backstabbing; Fang's right arm was chopped off, and he fled with his injuries, but was rescued by a young girl, Xiaoban, who practiced the left-handed sword according to the Left-Handed Atlas, which was inherited from Xiaoban's father. Later, Ru Feng was avenged by his enemies, the Smiling Erlang and the Long-Armed God Demon, and his disciples were killed and Qi Pei was imprisoned. In the midst of the crisis, Fang Gang, regardless of the past, rescued Qi Pei with Xiaoban, and then killed Er Lang, the Long-Armed God and his clique, and rescued his master. Afterwards, the two of them went away to the far corners of the world.