Vampire Party (2008)

Best friends and hardcore partiers Sam, Alice and Prune have scored invitations to 'Medici Night', the legendary VIP bash held every year at a remote castle. But when they discover that this wild party is being thrown by an elite race of blood-crazed vampires, they'll have to stake, stab, slice, bludgeon and blast their way out of a soiree where the hosts are thirsty and the bar is now open.