Shen Lan, a poor student with taciturn behavior and strange behavior, and Chen Wenxing, a popular top student with both talent and appearance. Two people who would not have any intersection in ordinary people's eyes were accidentally put into the same class. Daily collisions and coincidences bring the two closer and closer. They have very different life experiences and carry their own secrets. Their mental immaturity prevents them from seeing their true feelings clearly. The little things I thought I wouldn't care about, the memories I thought I had given up on, are actually affecting the direction of my destiny. Can the vague and ambiguous feelings in youth persist until adulthood? Can you find your own happiness in the long road of life? Please tune in to watch the journey of Deep Blue's life, and Kubilan is dedicated to you!