In the late autumn of 1938, Wuzhen in the south of the Yangtze River was shrouded in the dark clouds of the Japanese army's "Qingxiang" campaign. The cold light of bayonets on the bluestone road and the swaying sound of awning boats intertwined into a depressing picture of the Anti-Japanese War period. Progressive female student Bai Hening, because her brother died in the Battle of Songhu, resolutely stayed in her occupied hometown. She used her identity as a pharmacy apprentice as a cover to secretly pass on information about the underground party - her medicine basket contained herbs and also hid key secrets on the Japanese arms transportation route.
In "Mengji Buzhuang", Bai Hening unexpectedly met with underground party member Meng Jiaen. Meng Jiaen, as the head of the Wuzhen guerrillas, was worried about ambushing the Japanese arms ship. The information brought by Bai Hening was like a timely help, but he was also in trouble due to the sudden increase in alert of the Japanese army. At the critical moment, the secret help of the drug store shopkeeper Wang and the cover of the grain transport ship at Dongzha Pier allowed the two to break through the blockade and meet at the Reed Marsh Camp.
Faced with the unfavorable situation of doubled Japanese sentries and dense searchlights, Bai Hening relied on her familiarity with the terrain of the water town to come up with the strategy of "luring the enemy in a brick kiln": using firelight to attract the main force of the Japanese army and create opportunities for the guerrillas to ambush at the bends of the canal. On the night of the ambush battle, Bai Hening was forcibly recruited by the Japanese army to "treat his injuries", but he took the opportunity to observe the movements and witnessed the guerrillas' victory in successfully sinking the arms ship and seizing weapons.