In the "Eternal Night City" where the rain never stops, the top memory scavenger "Zero" makes a living by clearing other people's painful memories, but his own past is blank. One day, he received a strange commission: a woman named Ella requested to delete a warm memory about the carousel. When Zero dived into the depths of this seemingly harmless memory, he discovered that it was like a locked beacon, guarding a forgotten ocean. And that sea is connected to his own lost identity. Every dive is an adventure closer to the truth, but the price of the truth may be heavier than forgetting.
