A man codenamed "Zero" woke up on an isolated island and lost all his memory. A mysterious woman who calls herself Eva tells him that this place is a healing place designed to heal the trauma of his past. However, this seemingly perfect paradise is full of weird and unexplainable details: the never-changing tides, the recurring birds, and the cold fragments of another world that flash in his mind from time to time. Zero begins to doubt everything, including himself. Is he a patient seeking redemption, or a prisoner imprisoned in a carefully constructed cage? In this ocean of forgetfulness, retrieving the truth of his memory is his only beacon, or it may be the whirlpool that swallows him completely.
