Song Jiang, known for his audacity and righteousness, informs Chao Gai and other vigilantes from Mount Liang of pursuing government troops. Chao and the group from Mount Liang have just seized birthday gifts that were en route to the wicked prime minister.
Seeing Yan Xijiao selling herself for a proper burial for her father, Song takes Yan in as his concubine and accommodates both Yan and her mother at the Black Dragon Yard. However, Yan considers Song too old to be her husband. After meeting Song’s aid, Zhang Wenyuan, who comes to borrow some tea,Yan starts an affair with him because he is young and knows how to please her.
Meanwhile, Chao and the others, returning to Mount Liang safe due to Song’s help, send Liu Tang to deliver a letter and five taels of gold to show their gratitude. Song, however, neglects to safeguard the letter.Yandiscovers the letter and uses it to blackmail Song for a divorce. Still dissatisfied despite his compliance,Yan decides to take the letter to the government. In indignation, Song kills the woman. Now a murderer, he finds himself compelled to join the outlaws on Mount Liang.
Even after her death, Yan still misses Zhang. Assuming a human shape, she pays him a visit. To Yan’s surprise, Zhang has fallen in love with another woman. Spurned, Yan kills her lover and takes him with her to the underworld.