Lin Cha woke up one day to find that she had transmigrated into a book she had written herself. She had become the female lead's younger sister, tasked with saving the second male lead and protecting the relationship between the male and female leads. But as Lin Cha delves deeper into this world, she finds herself caught in the female lead's original predicament. What should she do?
Female lead: Lin Cha, delicate and ethereal in appearance, but steadfast, clear-headed, and decisive.
Male lead: Yan Huaqing, gentle and refined, with a deep-seated cunning and a strong possessive streak.
Lu You'an, a fiery young man in red, with an intense, obsessive personality.
Theme: Transmigrating into a book