唯性斋主简而清饰演一名说书人，从民间搜集水浒传3段鲜为人知的风流艳史：话说母夜叉孙二娘性情刚烈，但其实风流万种，是一位大食少妇，可惜丈夫张青不能人道，幸好他研制出草本春药，再以一招借尸还魂，令母夜叉夜夜采阳补阴；浪子燕青空有一身武艺，却是情场初哥，直至遇上名妓李师师；黑旋风李逵被盛名所累，竟被人冒认，到处招摇撞骗，淫欲民女……

Presented here are three "untold stories" from the classic Chinese Novel: Water Margin: "Jinx": Madam Sun is a woman who always thirsts for sex. However, her husband Cheung Ching is impotent, yet clever enough in developing a drug that can heal his shortcoming; "Prodigal": Yin Ching is a martial arts master who knows how to achieve victory with each part of his body, except for his most private part, until a prostitute teaches him a most important good lesson; "Black Whirlwind": Li Kwai is thwarted by his own fame. Faked whirlwinds are everywhere looking to take advantage. A lustful girl is wise and fortunate enough to play dirty, with both impostors, as well as our genuine hero.