Wu Song and his two guards arrive at the Mengzhou court, delivering the sentence, and Wu Song is transferred to the prison fortress. While waiting in the hall of the fortress, the second son of the head, Shi En, notices the heroic stature of Wu Song and he gets the idea to ask Wu Song to avenge his elder brother.
武松跟隨二長解到孟州衙門投文，後到管驛衙門，最後武松將由管驛衙門看管。在管驛衙門的大堂上，管驛官的二兒子施恩，見武松是英雄氣概，欲求他爲自己的胞兄報仇。