This is the story of Liang Cheng, who was reborn and changed his fate. After a rebar pierced his chest while he was protecting a coworker at a construction site, Liang Cheng returned to his seventeen-year-old self in high school. Determined to change the past, he first started participating actively in math class and interacting with Jing Ya, hoping to change her fate. He also began to care for his father, Liang An, and tried to improve their family relationship. Full of drama and emotional conflict, the story follows Liang Cheng's growth and transformation after being reborn.