Transylvania Hotel things have changed a little lately: Dracula’s strict policy that only accepts monsters in the hotel has relaxed, and the hotel opens its doors to people. But behind the closed cavities, Dracula is anxious because his adorable nephew, half vampire, half man, Dennis, does not show signs of being a vampire.
So, while Mavis visits his own human fathers (and is also part of a cultural shock), the vampire grandfather Dracula calls his friends Frank, Murray, Wayne and Griffin to make Dennis special training. But no one knows that Drac’s father, the very old and mournful Vlad is about to make a visit to the family. When Vlad finds out that his son-in-law is not pure blood, and that people can now stay at Hotel Transilvania, things get a little crazy.