A Van Helsing-like professor and his protegé are tracking Dracula's descendants through the world of "parallels", creatures who are human in form but live quite distinct psychic lives. A circus dwarf who is in love with one of these creatures leads them to a mansion filled with oddly behaving nuns, The Order of the White Virgins. The nuns are detaining a beautiful woman who is the betrothed of the still-extant Dracula. When she escapes, everyone...

Everything seems to be changing for the better at Hotel Transylvania. Dracula's rigid monster-only hotel policy has finally relaxed, opening up its doors to human guests. But behind closed coffins, Drac is worried that his adorable half-human, half-vampire grandson, Dennis, isn't showing signs of being a vampire.