In a seemingly quiet town a mysterious meteor shower produces a sinister green meteorite that seems to have a dangerous effect on the dogs that who once were the kind well-behaved dogs we once knew turn into vicious killers and the residents are forced to engage in a battle of man vs beast as man's best friend turns into their worst enemy and one teenage girl named Roslyn has to fight her way through the vicious canines accompanied by her faithful dog shemp they must find a way to survive against the dogs they once called man's best friend