In a future city where memories can be accurately deleted, Ling Chen, a top memory cleaner, erases the pain of his clients with the calmness of a scalpel. He regards memories as data and emotions as redundancy, in order to numb his heart that was already broken due to the pain of his wife's death. However, a mysterious client brings a strange request - to delete an unspeakable melody. In the process of diving into the deep sea of the customer's consciousness, Ling Chen was horrified to find that the melody resonated with the fragments of his dusty memory about his deceased wife. A forgotten truth, a conspiracy about technological ethics and the redemption of human nature, is dragging him into an endless whirlpool built by memory.
