Zombie Town (2007)

Local mechanic Jake LaFond's life is suddenly disrupted when mysterious parasites transform the law-abiding citizens of his quaint hometown into hoards of cannibalistic zombies. Isolated from the outside world by an accident on the only road out of town, Jake turns to Alex, his ex-girlfriend, for help. Together they try to solve the mystery behind this rapidly spreading infection. As the town grows deadlier by the moment, Jake's gun-toting rival, Randy, becomes the third person in this trio of unlikely heroes and the battle is on. Between blood hungry grandmothers and lethal domestic animals, Jake, Alex and Randy must fight to make it through the night. Can they survive?