Lin Yu, who was gloomy and lonely, met Su Yan, a transfer student, in his sophomore year of high school. Su Yan broke into his dark world like a bright light. Su Yan's proactive approach broke Lin Yu's self-isolation barrier, and the two teenagers gradually got closer through repeated trials and pulls. Su Yan melted Lin Yu's defenses with warmth and patience, leading him to feel the sunshine he had never had before; and Lin Yu's fragility and sincerity also allowed Su Yan to take off the pretense of "must be optimistic", and the two became each other's salvation. But the shadow of the original family, the rumors from the outside world, Lin Yu's inescapable self-destructive tendency, and the force majeure of reality finally made this relationship that sprouted in midsummer move towards an irreversible tragedy at the end of summer.
