Captain Newton and his men have always protected Port Fayt--a place where humans live in peace alongside trolls, elves, and fairies. But now Fayt is under threat from a much more powerful enemy--the League of Light, a group out to destroy all non-humans. Half-goblin boy Joseph Grubb has only ever heard stories of Captain Newton and the Demon's Watch. Fed up of working at his uncle's tavern, Grubb dreams of escape--until a whirlwind encounter with a smuggler plunges him into Fayt's criminal underworld. There he meets the watchmen and learns of their mission to save the port. Can Grubb and his new allies uncover the dark plot in time, or will they end up as fish food in Harry's Shark Pit?