解放军某部在海上练兵遇风暴，桅船触礁被冲到孤岛上，蒋匪乘机围攻。战士们与风浪、饥饿和敌人进行斗争，并设法与部队联系，消灭了敌人。

解放军某部在海上练兵遇风暴，桅船触礁被冲到孤岛上，蒋匪乘机围攻。战士们与风浪、饥饿和敌人进行斗争，并设法与部队联系，消灭了敌人。

The young poet Xin Baihe flees Shanghai with his friend, Liang. Liang soon joins the resistance against the Japanese invaders, but Xin chooses to pursue a relationship with a glamorous and westernized widow in Qingdao. After hearing that Liang has been killed, Xin has a change of heart and rushes to join the war effort.