In a future city where memories can be accurately removed, the top "memory scavenger" Ling Shuo makes a living by stripping away the pain of others, but stubbornly guards his own fragmented island of memory. When a mysterious woman Shu Wan appears with an incredible request - to erase the most beautiful melody in the world - Ling Shuo's professional principles and dusty heart are shaken at the same time. He dived into the depths of her disguised memories, only to discover that the melody was actually a cage, imprisoning secrets that could subvert the order of the entire city. In this vast ocean of oblivion, will they choose to sink or work together to find the truth about their exile?
