When Ellen Cole goes undercover at a mental asylum to rescue her brother, she is unaware that she is about to encounter her worst nightmares, for St. Mariahs Hospital for the criminally insane holds a dark secret. Deep in the dark recesses of the Asylum, Vampires have been caged for experiments and on this festive night the vampires will rise to draw blood again. Whilst in the hospital ballroom the party guests are blissfully unaware of the horror heading straight for them. With only the help of a whimsical police bobby and a pathalogical killer can Ellen escape the insanity of the Asylum?