Rex Ripley wakes up on the shore of a mysterious island, surrounded by an untamed wilderness, with no memory of who he is or how he got there. As he explores the island, he discovers he is not alone. Other boys are stranded too, each with the same blank past and growing questions about how they got there.

The island is anything but safe. Tigers stalk the jungle. Snakes lurk in the underbrush. Giant sharks patrol the waters. Rex and the others need to band together and follow a set of rules they call the Survival Code. If they don’t, they’ll never make it off the island alive.