Yu Li and her boyfriend, Bai Jingmo, unexpectedly enter the world of a novel. However, the system tells her that her gentle, affectionate boyfriend is actually the villain destined to fall into darkness in the story, and he has already lost his memories of their love. Yu Li refuses to believe in the so-called plot and takes the initiative to find Bai Jingmo, who is insecure and sensitive, helping him rediscover himself. As they travel between the real world and mysterious film sets, they solve one mystery after another while searching for a way home. As their memories gradually return, Bai Jingmo's hidden identity and the truth behind their repeated reincarnations are slowly revealed. Together, they use their unwavering choices to rewrite their predetermined ending.