During a school trip, their plane crashed near an unknown island. Kayn, Noel, and a handful of other students survived on one shore, struggling for days to stay alive. While searching for food in the forest, Kayn and Noel fell into a hidden ditch where they found a mysterious fruit. Starving, they ate it without knowing its consequences. After a failed escape attempt, they fell through a waterfall, where they discovered underwater that the fruit had transformed them into mermen. 