Nat Rodrigues keeps dreaming of an island. Soon, the dreams become waking visions. Alone and concerned, Nat manages to locate other teenagers across the globe who share her intense obsession with the unmapped enclave. And then, the strangest part: Every one of them wakes one morning with a mysterious tattoo. A tattoo only the six of them can see. Now, each of them knows—no matter the obstacles in their way—they must discover this unknown paradise.