BloodRayne II: Deliverance

Billy The Kid and his gang arrive in the town of Deliverance, where he's just finishing up the construction of the new railway. Holding the population of the town in check, which due to the fact that they are vampires, not a big problem. The sheriff turns into a vampire and all the kids they kidnap. Their plan is to use the incoming immigrants expand their ranks, and thus to dominate the whole wild west. To help the clueless and the helpless people, however, comes damphírka (half vampire, half human) Rayne with a small group of devotees, to raise in the Deliverance of order.