In an alley in Beijing, there lived seven childhood friends who called themselves "Seven Little Fortunes". From childhood to adulthood, they shared happiness and shared difficulties, treating each other as family members without blood ties. Until misfortunes and accidents came one after another, the relationship changed, contradictions gradually emerged, and the differences and hidden dangers that were once ignored were infinitely superimposed and magnified. They began to question each other's sincerity and dedication, and the originally solid small group began to crack and crises. The road of life is full of tests. Can they successfully overcome the difficulties and defend their friendship?