In the "Floating City" where memories can be extracted, traded and erased, Gu Chuan, a top memory mediator, has been involved in the joys and sorrows of others all day long, but he has been unable to piece together the truth about his sister's death. A mysterious commission from the powerful man Ling Shuo requires the erasure of a taboo core memory, which draws Gu Chuan into a fatal whirlpool. At the same time, Xiao Yu, a low-class girl who sells happy childhood memories, awakens his dusty emotions. When Ling Shuo's secret accidentally intertwined with Xiao Yu's past, Gu Chuan discovered that the truth he was looking for might be what he had buried with his own hands. On this island built of memory, is forgetting the final salvation or a deeper abyss?
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