Shi Yuan, a woman who died under a falling rock in her previous life, transmigrates into the body of a cannon fodder wife in a novel. She finds herself on her wedding night with Jiang Yu, the story's major villain—a cold, ruthless man known as the Encounter God in the entertainment industry. The original host had entered a fake marriage with Jiang Yu for thirty million yuan to support her younger brother, Shi Luo. Upon waking, Shi Yuan assesses her situation and decides to survive by avoiding the tragic fate that awaited the original character.
Shi Yuan's first priority is protecting her younger brother, whom the original host had mistreated. She discovers that Shi Luo will eventually become a minor villain in the story, but she resolves to shield him from that fate. Her relationship with Jiang Yu begins with tension; he is cold and dismissive, warning her not to interfere with his life. However, Shi Yuan's unconventional behavior—playful, unbothered by his reputation, and genuinely caring toward Shi Luo—begins to shift his perception of her.
The plot accelerates when Shi Yuan discovers she has only three years left to live unless she completes missions from a system called Xiao K. The system offers her a chance to live to one hundred in exchange for completing tasks and earning points. Her first mission is to participate in the dating show "In Love and Aflutter" and become the Popularity King. Coincidentally, she was already scheduled to appear on the show, where the original female lead, Yang Qianqian, possesses a "Lucky Koi" persona that draws massive fan devotion.
At the variety show, Shi Yuan is paired with Jiang Yu as the Mysterious Guest. The production team attempts to rig the lottery draw to pair Zhang Li with Jiang Yu, but Shi Yuan breaks the mechanism and draws number three, forcing an unexpected pairing. Throughout the show, Shi Yuan outperforms Yang Qianqian in various challenges, undermining the original female lead's luck-based persona. Yang Qianqian, who also has a system that allows her to absorb others' luck, becomes increasingly desperate as her own luck wanes and Shi Yuan's popularity surges.
Key incidents test Shi Yuan and Jiang Yu's partnership. During a food selection challenge, a cart tips toward Shi Yuan, and Jiang Yu pulls her into his arms to protect her, injuring his arm in the process. Later, when Shi Yuan's lounge chair collapses, Jiang Yu catches her, resulting in an awkward moment that sparks rumors and fan excitement. These events, combined with Jiang Yu's protective gestures—such as drying her hair and blocking cameras from filming her—generate a rising CP trend called "Taro Balls" for their pairing, threatening Yang Qianqian's dominance.
The core conflict centers on Shi Yuan's struggle to survive and complete system missions while navigating a story whose plot she only partially understands. Yang Qianqian represents a direct threat, using her system to steal luck and popularity, while the original narrative pushes toward Jiang Yu's death and Shi Yuan's demise. As Shi Yuan gains allies and changes the course of events, she must also contend with sudden missions from Xiao K that introduce unpredictable dangers. The story follows her efforts to rewrite her fate, protect those she cares about, and survive in a world where the lines between fiction and reality blur.
