After school one day, Ryuji walks his dog Togo through a graveyard when Togo finds a creepy necklace to sniff. But when he touches it with his nose, it flies up around his neck and possesses him. Suddenly bent on bloodshed, Togo chases Ryuji right into the arms of Skylar, a girl from school. Together, they must flee the deranged dog and find a cure fast.