At thirty, Mo Chen is unexpectedly reborn in his high school years. With a school bullying incident looming, he decides to make up for his regret at failing to protect Lin Yiran in his previous life.
In the narrow alley where the nightmare from his past life was about to unfold, Mo Chen follows Lin Yiran in advance, determined to protect her and prevent her from suffering the humiliation she endured before. He uses an IOU to keep her close. In his previous life, Mo Chen had been standing at the intersection and watched with his own eyes as Lin Yiran was dragged into the alley. Now that he has been reborn, he is determined to spare her that disaster.
Beneath his tough act of pretending to collect a debt, Mo Chen carefully observes Lin Yiran’s difficult living conditions. Every detail, from her hardened steamed buns to her spoiled sanitary pads, cuts into the heart of a man reborn with memories of the future.
His lament about environmental pollution on the way home hints that Mo Chen has returned with memories of the future.
Because of the System, Mo Chen’s feelings for Lin Yiran begin to change.
