When Shi En visits Wu Song in prison, Wu Song gives him a warning and tells him to come to see him again before his transfer; he has something on his mind to tell Shi En. Finally, the approval of the reduced sentence is received from the provincial authorities. Wu Song is to be transferred to Enzhou in Beizhi, for penal servitude. Little do they imagine that Jiang Zhong has inside knowledge, and is preparing to kill Wu Song on his way to Enzhou.
施恩探監，武松特地關照施恩，在他發配前一定要來見他，還稱有話對他講。結果，省上回文到，判武松發配北直恩州，不料這一情況被蔣忠得知，因此蔣準備在武松發配途中將其殺害。