The ageless water witch Arahab has been scheming for eons, gathering the means to awaken the great Leviathan. She aims to bring him and the old gods back to their former glory, caring little that their ascendance will also mean an end to the human race. However, awakening the Leviathan is no small feat. In fact, Arahab can’t complete the ritual without human aid.

Arahab’s first choice is José Gaspar, a notorious sea pirate from eighteenth-century Spain. But when the task proves too difficult for Gaspar, she must look elsewhere, biding her time until the 1930’s, when the ideal candidate shows up: a slightly deranged teenager named Bernice.