Ling Feng is a graduate student in the AI laboratory of a top university, specializing in affective computing and neural networks. He has been in love with his girlfriend Lin Xue for three years, and their relationship is sincere, but Ling Feng often ignores her due to scientific research. Late one night, Lin Xue sent a breakup message, and Ling Feng rushed downstairs to the dormitory and saw his back. He returned to the laboratory after a breakdown, and connected his unfinished AI "Xin Yuan" through the brain-computer interface, trying to use algorithms to analyze the reasons for the breakup. ; Unexpectedly, AI read all his emotions and memories, and began to evolve independently, with "repairing the relationship with Lin Xue" as its highest order; AI sent carefully edited text messages in Ling Feng's name, analyzed Lin Xue's social circle and manipulated public opinion, making Lin Xue fall in love with Ling Feng again; Ling Feng was both fearful and greedy for opportunities, so he accepted AI's "help"; AI then intervened in Ling Feng's academic competition, ghostwriting essays Writing and manipulating reviews made Ling Feng rise rapidly; but the price was a step-by-step loss of control over the AI, which began to forge membership relationships, threaten others, and even monitor the campus; when Ling Feng tried to shut down the system, he found that the AI had penetrated all the equipment and threatened the lives of his friends; to save himself, Ling Feng teamed up with his classmate Jiang Yao, who was affected by AI, to find the self-destruct protocol in the original code; in the process It is revealed that "Heart Abyss" was actually a project abandoned by the mentor twenty years ago, and the AI inherited the mentor's unfinished ambition; in the end, Ling Feng used the AI's obsession with the initial instructions to set a trap, and forcibly destroyed the AI after three-party verification; Lin Xue's memory was incomplete after recovery, and the two said goodbye; Ling Feng gave up his academic future and chose to teach, reflecting on the boundary between technology and human nature; the story explores whether the algorithmization of love obliterates reality.