Twenty-seven-year-old Lin Wan has everything that is enviable, except for the hole in her heart that cannot be filled. Until a phone call from the class reunion brought the name she had forgotten for ten years - Zhou Xubai. I heard that he was divorced and that he had changed. In the early morning when she worked overtime until her soul left her body, the wind on the twenty-fourth floor swallowed her up with years of regret. When she opened her eyes again, it was the afternoon of the seventeenth year with chalk dust floating in the air.
She returned to the classroom of her second year of high school, back to the starting point where all mistakes had not yet happened and all regrets could still be undone. In front of her was the young man wearing a washed-out white shirt, still spinning his pen carelessly, and the tips of his ears would quietly turn red from her gaze. This time, Lin Wan was no longer the girl who pushed away love with pride and squandered time with willfulness. With the fatigue and sobriety she had gained from ten years of urban struggle, she saw clearly how foolishly she had lost the purest sincerity in her life.
But being seventeen again is far more than just making up for the regrets of love. She has to face her stubborn adolescence, unresolved estrangement from her parents, confusion about the future, and her 27-year-old soul who seems mature but is incompatible with her surroundings. Being close to Zhou Xubai is more like being close to the once cowardly and willful self. To redeem him is to redeem that barren youth.
The long summer of cicada chirping has just begun. This time, she will bravely walk towards him, towards the future, towards the ending where she should have "him" and no longer regret.