In Long Muchun's life, there have been three women with four seasons hidden in their names: Xia Bing is the passionate heartbeat of a young man in midsummer, his ignorant, fruitless and withering first love; Qiu Xue is the acquaintance and companionship of a half-life journey, a confidante whose souls are of the same frequency but only limited to the right; Dong Ning is the stable destination for the rest of his life, the cold and plain wife who stays with each other with fireworks. The rotation of three seasons covered his entire life, but there was no spring that he had longed for all his life. In the mountainous campus of the 1980s, Long Muchun and Xia Bing met at the same table. Their pure and passionate feelings like midsummer quietly grew. Before they could confess, they were shattered by rumors, misunderstandings, and worldly life, and their hasty separation became a gap of obsession that lasted for half their lives. After several years of rolling, he traveled through the wind and frost of the world, met Qiu Xue by chance on the dusty road, and fell in love. However, due to the propriety of time, he could only know each other from a distance, but could not stay together. After experiencing the loss of youth and the passing of close friends, he finally found stability and became friends with Dong. They spent their daily lives together without any disturbance or enthusiasm. Half his life passed by, summer ended, autumn fell, and winter condensed. He spent his whole life chasing the warmth of spring, but all he was left with was desolation. When he reunited with his old friend in middle age, life and death disasters came one after another, and all the regrets, debts, restraints, and relief from the past surged up. He finally understood his fate: his name was Muchun, and there was no spring in this life. All the heat and tenderness were fleeting, and only the peace that settled down was the ultimate gift of time.