Dong Haifeng, an unemployed youth, attended his cousin Jin's wedding and met his old classmate Jiang Niangao. At the wedding, the bride Huang Shangshang was critical of the groom in every way, while Jin was always meek and humble. The wedding March sounded and the accident happened. Huang Shangshang was taken to the hospital. On the way, Dong met his best friend Huang Xiaohe at the rice cake. The story of Gao Jinde's "Three Old Boys in Donghai Peak" begins. Dong Haifeng and Bian were supposed to get married, but they have been working hard outside for work reasons and failed to do so. Bian went from sympathy and comfort to misunderstanding, complaint and disgust, and was so poor that she didn't love the rich that she threw herself into the arms of the rich. Jiang Niangao's family was rich but did nothing until his father Jiang Decai paid bribes and went to prison. He Xiaohe of the Civil Affairs Bureau is unhappy because of the influence of the environment. With the help of Donghai Peak again and again, her cold heart gradually melted. The values and outlook on life of different classes are intertwined and collided, and young people in the mood for love make different choices and choose understanding and tolerance.