Gu Jin, an ordinary office worker, transmigrates into a novel as the beloved cousin and best friend of the beautiful female lead Cheng Xin—a protagonist who effortlessly captivates every distinguished man in her orbit. The two cousins seem destined for a lifetime of friendship until Gu Jin's inherited memories expose a devastating prophecy: she will marry Shao Chong, the handsome second male lead, only to be abandoned for his obsessive love toward Cheng Xin. When violence strikes and Gu Jin faces death, her husband remains faithfully at her cousin's side. Armed with this foreknowledge, Gu Jin refuses to surrender to her predetermined fate. She will not languish as a supporting character in Cheng Xin's romance. This second chance through transmigration is hers to claim, and she resolves to become the true protagonist of her own love story—no longer a spectator in someone else's tale.