Dracula is worried about Mavis leaving the hotel, so he tries to bring out the monster in his half-human, half-vampire grandson. However, when Dennis' fifth birthday approaches, Dracula becomes desperate to make his grandson a vampire. Meanwhile, Mavis considers moving to California to raise her son around humans. As tensions rise and chaos ensues, Dennis finally manifests his vampire powers, leading to a battle against a group of demons. In the end, Dracula and Mavis decide to continue raising Dennis at the hotel.

After an experiment gone wrong, Drac and his friends are transformed into humans. They must team up and race against time to find a cure and switch back before it becomes permanent.

Dracula, the owner of Hotel Transylvania, operates a high-end resort where monsters can be safe. When a human named Jonathan discovers the resort, Dracula goes into overprotective mode to keep his daughter Mavis safe from a potential human threat. However, as Jonathan charms everyone at the hotel, including Mavis, Dracula realizes that he has broken Mavis' heart by manipulating her and must find a way to make things right.

Dracula and his family embark on a luxury cruise for monsters, but Dracula falls in love with the ship's captain, Ericka, who is hiding a dangerous secret. As chaos ensues, Dracula and his friends must save the day and ensure all the monsters have a memorable vacation.