When monsters appear on Earth, Maggie MacKay is on the job. No one is better at hauling the creepy crawlies back where they belong. No one, that is, except Maggie's dad, who vanished in the middle of an assignment. Now, an elf named Killian has shown up with a gig. Seems Maggie's uncle teamed up with the forces of dark to turn Earth into a vampire convenience store, serving bottomless refills on humans. Ah, family... The only hope for survival...