In a coastal city called Pulian City, 16-year-old Shan Qiuhan met Luochen. On the tennis court, Luo Chen accidentally hit Shan Qiuhan with the ball twice. She was very angry. But when she went to school the next day, she found out that she and Luo Chen were in the same school and in the same year? ! After going through many ups and downs, the two finally came together, but the Shan family encountered misfortune. Shan Qiuhan and Luo Chen left without saying goodbye... Three years later, Luo Chen met Shan Qiuhan again. She had changed a lot, but what about their relationship? Is it the same as it was in this city where I first fell in love? And many things have great mysteries. What have they learned in the past three years?