Si Yin, a fox spirit, awakens in a human body after the Heavenly Dao transfers her into a campus romance novel. The original plot follows a tragic path where the female lead, Lin Wan, manipulates the male lead, Lu Zhou, leading to murder, imprisonment, and mutual destruction. Si Yin, originally Lu Zhou’s childhood friend and self-proclaimed "bro," decides to alter the narrative. Upon entering the world, she discovers her assigned "bug" is a physiological condition that causes intense physical reactions and heightened sensitivity whenever she is near the male lead. This condition forces immediate intimacy, breaking down the platonic barrier that defined their original relationship.
Lu Zhou, initially confused by Si Yin’s sudden affectionate behavior, gradually accepts the change. The two move in together, and Lu Zhou’s protective and possessive nature emerges. He handles threats with ruthless efficiency, dismantling Lin Wan’s schemes before they can harm Si Yin. Lin Wan, stripped of her ability to manipulate Lu Zhou, faces escalating consequences. She attempts to smear Si Yin online, but Lu Zhou exposes her identity, turning public opinion against her. Lin Wan’s descent continues as she becomes entangled with Bai Lu, a wealthy rival, leading to a cycle of blackmail, debt, and violence. Si Yin and Lu Zhou orchestrate Lin Wan’s downfall, sending her abroad to a life of destitution and blindness, effectively removing her from the story.
Si Yin’s family, who had long exploited her for financial gain, attempts to force a business collaboration to save their failing company. Lu Zhou facilitates a counter-strategy, allowing the Si family to invest heavily in a project that is designed to fail. The family goes bankrupt, and Si Yin severs all ties, acquiring their company as her own. With the original antagonists neutralized, Si Yin and Lu Zhou marry. Their life together is characterized by deep affection and domestic bliss, culminating in Lu Zhou carrying their child due to advanced medical research funded by his company.
After completing the campus world, Si Yin is transferred to a new setting within the entertainment industry. She awakens in a cramped apartment filled with delivery packages. The Heavenly Dao informs her of the new plot: she is to play Si Yin, a streamer with a "tear-incontinence" condition who is framed by the female lead, Song Zhizhi. The original Si Yin was destroyed by false accusations of selling fan gifts, leading to the male lead’s suicide and the world’s collapse. Si Yin discovers that while she must maintain the character’s persona, the physical condition of involuntary crying has not transferred. She must rely on acting and manipulation to survive.
Song Zhizhi, the antagonist of this world, attempts to replicate her previous tactics by framing Si Yin. However, Si Yin anticipates these moves. She engages with Li Jue, the male lead and top donor, using calculated vulnerability to secure his protection. Li Jue, initially distant, becomes increasingly invested in Si Yin’s well-being after receiving messages that evoke his sympathy and possessiveness. Si Yin navigates the hostile environment of the streaming company, countering Song Zhizhi’s schemes while building a loyal fanbase. The story shifts from passive survival to active counter-manipulation, as Si Yin uses her knowledge of the plot to turn the tables on her enemies and secure a stable position alongside the male lead.
