This film tells the story of the brotherly relationship between Cao Tiedan and Wang Tongchui, who grew up young. Cao Tiedan, who worked on the farm, was fired and decided to work hard in the city. When he had no hope of finding a job, he happened to encounter a childhood friendMy playmate Wang Copper Hammer followed him to the construction site to swing a sledgehammer to make a living. In order to treat his mother, Cao Tiedan wanted to ask the farm owner Chen Dahei to recover the wages owed to him. Wang Tonghammer decided to help Tiedan ask for money. In the process of discussingDuring the salary process, by chance, they encountered another criminal gang led by Hu who wanted to kidnap Chen Dahei and his wife. They engaged in a struggle between good and evil, as well as between black and white. In the end, the two brothers assisted the police in apprehending Chen Dahei and his wifeCaptured the kidnapping gang and solved a major murder case eight years ago. Cao Tiedan also reconciled with the farmer Chen Dahei, and Wang Tongchui developed feelings for the farmer's sister. In the end, they ended in a joyful ending.