In a future city where memories can be extracted, repaired and traded, Lin Mo, the top memory restorer, has forgotten everything most important about himself. The only thing he has is a broken fragment of his wife "Xiao" under the lighthouse on the seaside. In order to find his complete lover and self, he set foot on the legendary "Island of Memory". This isolated island is the home of all forgotten memories and is guarded by a mysterious "pilot". Here, every step of exploration must be exchanged for an existing memory. Lin Mo was forced to make a cruel choice between his remaining sanity and his obsession with finding the past, but found that the truth was far more hurtful than forgetting.