Working in pest control is a nightmare, but bringing the bugs home is worse. Frustrated by a never-ending flea infestation, an overworked exterminator makes a reckless wish: "I wish these little bastards were bigger so they'd be easier to kill." That night, the world changes forever. Plunged into a sudden, bloody apocalypse where human-sized mutant fleas become humanity's ultimate apex predators, he must team up with a vengeful survivor out to avenge his dog. Can he survive the chaos he accidentally asked for?