In a future world where technology can be used to quantify emotions, Su Qian is an emotional data scientist, and her daily job is to eliminate other people's overly intense emotional memories, especially painful love. Her world follows reason and calm, until she meets Lu Yi, a rare patient with "eternal memory syndrome".
Lu Yi's memory will never fade. He carries clear memories of every moment in the past thirty years, including all the details of his lover Lin Wan who passed away in an accident seven years ago. The official system marked him as an "emotional hazard" and recommended memory formatting. But when Su Qian was looking through Lu Yi's memory data, she unexpectedly discovered that she had surprisingly similar thinking patterns and emotional reactions to the deceased Lin Wan.
As Su Qian is assigned to "treat" Lu Yi, a dangerous and intense attraction develops between the two. Su Qian must choose between completing the mission and protecting Lu Yi's memory. As the investigation deepens, she discovers that Lu Yi's memory may hide a secret that changes the landscape of emotional technology. When the love they long for violates social taboos, Su Qian needs to decide: to eliminate this dangerous desire, or to follow it and explore the forbidden frontiers of human emotion.
