In the futuristic city where neon lights and gloomy rain intersect, Lin Mo is a top "memory cleaner" who peels away the painful past for his clients with scalpel-like precision. He was calm and distant, as if he had already cut off all his emotions. Until one day, a woman named Su Qing brought an incredible request: to delete a very happy memory. While sneaking into the sunny beach that she regarded as a curse, Lin Mo was horrified to discover that the male protagonist in her memory was actually herself who had long forgotten her past. Every deletion is a cruel reunion. He must make a choice between professional ethics and the shattered truth, and this choice will determine whether they sink into the sea of oblivion together or pick each other up again on the island of memory.