The moonlight fell deep into the dream world, trapped in the nameless sea. A ticket to the unknown is the compass that will guide him to that lost island. Phineas Rolle is a "lonely nerd who can't make friends" who owns an antique shop called Nautilus on Oak Street. One day, a mysterious package is left in his mailbox along with a letter that will lead him to the mysterious Mirage Island his mother once told him about in his childhood. On his journey, he accidentally resurrects Zhuo Lin, a male merman, and together they uncover a carefully orchestrated conspiracy and the secret of Mirage Island, hidden for thousands of years...