In Mirage City, where technology can extract and store memories, top memory repairer Lin Mo is known for his cool head and precision. He never probes his clients' secrets; he only repairs or erases the “traumas” they ask him to. One day, a mysterious woman named Su Wan makes an extreme request: to erase a man from her memories completely. But when Lin Mo dives into the depths of her shattered memories, he is horrified to discover that the man she is desperately trying to forget is none other than himself, from years ago. This forgotten past holds a secret capable of overturning the entire city's order, and he and Su Wan are at the heart of the storm. Is memory a prison or a salvation? Is forgetting a blessing or a curse? Lin Mo must make one final choice between recovering himself and losing everything forever.