Since the very day he was born, Gup has sailed the vast oceans and treacherous seas with his swashbuckling privateer parents. Though he knows little of life on land, circumstance soon finds him bound for safe harbor. Accompanied by his mother, Gup reluctantly leaves his father's dangerous mission for his own safety. But on that tragic day, they fail to make it home! Kidnapped with his mother, by murderous pirates, Gup is tossed aside like cannon fodder. He finds himself marooned, a captive, in an island village that is anything but friendly. With the help of a ragtag band of orphans and outcasts, Gup schemes an escape. Hoping to find his father and save his mother, the young sailor embarks on a journey of a lifetime! But on this voyage, however, Gup realizes it's no longer about reuniting his family, but about saving the world from an unspeakable fate.