On an isolated island called "Gui Island", all those who drift here will lose their past memories and gain a new life. When a young man named A Chen arrived, he could not settle for the "peace" he had been given. A mysterious object that does not belong to the island and a recurring dream drive him to challenge the iron laws of the island and explore the truth behind being swallowed by the "Sea of Forgotten". In this confrontation with the entire world, he will uncover the ultimate answer to whether memory is a gift or a curse.
