An esports prodigy, Lin Ling is at the height of his career when, after an important training camp, he learns that Jiang Sui, his childhood sweetheart and longtime love, has married someone else and completely forgotten him. The “bride” has become the “white moonlight” who saves the obsessive CEO Fu Jingchen, receiving all the love and adoration anyone could want. In the midst of his pain and despair, Lin Ling is bound to the [Negative Emotions System], which claims to be a “reject from the quick transmigration Bureau.” The System tells him the cruel truth: Jiang Sui’s body has been taken over by Jiang Jinyu, a mission-taker who transmigrated into a book. Jiang Jinyu’s mission is to replace the original heroine and save the CEO, Fu Jingchen. To complete her mission, she erased every trace of Lin Ling and Jiang Sui’s life together. The System was rejected after a bug arose from its outrage at Jiang Jinyu’s selfish “save one person, destroy another” approach. Its final obsession is to set things right. It grants Lin Ling the ability to collect negative emotion points and exchange them for powers, helping him expose Jiang Jinyu’s disguise step by step and awaken the real Jiang Sui’s consciousness.