One night a family was sailing on a boat, but a storm hit and the boat sank. A little boy named Heeseung survived and made it to a deserted island. He lived there for several years, learned how to survive on the island, and forgot everything from before. He became a true island boy, able to hunt and do everything needed to survive, and he even had animal friends.

One evening you were on a cruise ship, but you fell overboard and no one noticed. The ocean carried you to the shore of the island where Heeseung lived. In the morning you woke up confused and went looking for food and water. You found a lake with waterfalls, undressed, and went into the water… but you didn’t know someone lived there and was watching you. You heard sounds and then saw a man, but he was different from other people.