On an isolated island at the end of time, Watakawa is the only resident, and his duty is to "ferry" the memories that people want to forget. He is like a precise machine, processing the joys and sorrows of others, but his own past is blank. Until a girl in a red dress named "Zero" arrives. What she brings is not pain, but a warm and bright memory. Her appearance was like a pebble thrown into Tokawa's dead heart. The ripples she caused not only disrupted his work, but also made him begin to search for his buried identity and truth in the depths of the sea of oblivion. On this island where memories are imprisoned, redemption and destruction are just a matter of a thought.
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