In the early years of the Republic of China, the three men on the grasslands buried their beloved woman and vowed to left her son as his own son raised, and let the children call their father, father, father. Thirty years later, on the eve of the duration of the victory of the Anti Japanese War, this is called Ning Wuyuan boy has become the Party of a great warrior and stepped in to be deployed to perform tasks to Tianjin. Dad Ning Baolin is in the society the ringing of a successful businessman, father sumingyuan is a former employee of the newspaper to join the KMT, and dad Bayi is a Communist Party member is upright. The three person who is the enemy, who is an ally, a whirling time. In order to task, Ning Wuyuan between three and find the truth with father. In this process, he also found the secret of his life, and found his own father. And this biological father, but it is the Tianjin police chief Ji Mingyu. On the eve of the Japanese surrender, Ning Wuyuan to complete their task in the cracks, but also solve the he and four father fate between the enemy.