Lin Zenan and Su Gejing have been happy enemies since high school. Lin Zenan's obsession with music collided with Su Gejing's reason. The two were attracted to each other but misunderstood each other in their youth. During their college years, the two pursued their dreams in different cities, and their misunderstandings deepened and their hearts went wrong. But fate keeps bringing them back together. After experiencing the setbacks of dreams, the test of family affection, and the companionship of friendship, misunderstandings were gradually resolved. As they grew up, they understood themselves and each other: love is not only sweet, but also bitter and regretful. In the end, the two rushed to a new stage of life side by side, understanding that companionship is the longest confession of love.