In the future city "Cui City" where memories can be extracted, stored and traded, Ling Chen, the top "Memory Submarine", makes a living by salvaging other people's forgotten memories. He is like a ghost, wandering in the vast "Sea of Oblivion" - a digital space composed of countless abandoned memories. A commission from the mysterious woman An Ran led him into a forbidden data sea, and the target was a core memory that was tightly blocked by the "Time Series Company". When Ling Chen sneaked into the island of memory, he was shocked to find that this past that should have belonged to a stranger was actually closely connected with his own erased memory. In order to retrieve his lost lover and the truth, he must fight against the huge company that controls the memory lifeline of the entire city, and salvage his true life in an ocean of data and lies.
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