In his past life, Gu Yan was framed by his fiancée Su Wanting in collusion with Zhao Zhiyuan, who intentionally engineered a hit-and-run traffic accident to entrap him, leaving him with a ruined family and a tragic end. After being reborn, he returns to four hours before the tragedy occurs. Facing the doomed conspiracy, Gu Yan ventures into a fire to save people, becoming a city-wide praised hero, and thereby obtains an ironclad alibi, completely dismantling Su Wanting's deadly trap. Meanwhile, through saving people, he encounters a romantic fate, and from then on, Gu Yan begins his frantic counterattack against Su Wanting.