《刀锋1937》讲述了在抗日战争之前，一个颇有几分人缘，生活在基层，胆小怕事的小混混郑树森代替了自己的养父做了监狱的一名警察，在一次偶然性的机会下，接触到了躲在监狱里逃避敌人追杀的庞德，庞德智慧过人，老谋深算，为了替二十年前的家人报仇雪恨一直谋划着。郑树森与庞德相识后，一起卷入了一场场变幻莫测的阴谋之中。为了在恶略的环境下生存，郑树森与其他兄弟们在庞德的安排与帮助之下，在上海滩站稳了脚跟，最后造就了一个有着勇敢与智慧气概并存的郑树森。就在这时，日本人开始逐渐攻进上海，对抗日分子进行强烈的追杀，庞德与郑树森一起卷入了忘我救国，为大家的民主主义精神战斗中，造就了一部传奇故事

"Blade 1937" tells the story that before the War of Resistance Against Japan, Zheng Shusen, a timid and timid gangster who was quite popular and lived at the grassroots level, replaced him. His adoptive father became a policeman in the prison. By chance, he came into contact with Pound who was hiding in the prison to escape the pursuit of the enemy. I have been planning. After Zheng Shusen and Pound got acquainted, they were involved in unpredictable conspiracies together. In order to survive in the hostile environment, Zheng Shusen and other brothers, under the arrangement and help of Pound, gained a firm foothold in Shanghai Bund, and finally created a brave and wise Zheng Shusen. At this moment, the Japanese began to gradually invade Shanghai, and the anti-Japanese elements were fiercely hunted down. Together with Pang De and Zheng Shusen, they were involved in selfless efforts to save the country and fight for everyone's democratic spirit, creating a legendary story..