On an isolated island called “Orderly Isle,” memories are the only currency. A memory seeker codenamed Zero trades in other people’s joys and sorrows day after day at the memory exchange, hoping to recover a crucial memory that was taken from him. He is convinced that memory is the only proof that he exists. Then a mysterious woman named Xi appears, bringing with her the warning of an approaching storm and a question that upends everything: when memories can be forged and reshaped, what remains of the “truth” you cling to so fiercely? Forced onto a perilous journey, Zero must face the truth and lies of his own identity at the edge of the Sea of Oblivion.