After the events of the first film, Mavis (Selena Gomez) and her new fiancé Johnny (Andy Samberg) are finally married, with the approval of her father Dracula (Adam Sandler), and the world becomes aware of (and unfazed by) the existence of monsters. Mavis later reveals to Drac that she is pregnant and later, she gives birth to a baby boy named Dennis (Asher Blinkoff), who later befriends Winnie the Werewolf (Sadie Sandler), who has a crush on Dennis. Nearing his fifth birthday, Dennis has yet to grow his fangs and Drac worries that his grandson might not gain vampire powers. Noticing the dangers of Transylvania, Mavis starts to consider raising Dennis where Johnny grew up, much to Drac’s disapproval. Drac tells Johnny (who does not want to leave the hotel either) to bring Mavis to California to visit his parents, Mike (Nick Offerman) and Linda (Megan Mullally), but to make sure to keep her distracted so that she will not move, leaving Drac to “babysit” Dennis. Drac enlists his friends, Frank (Kevin James), Winnie’s father Wayne the Werewolf (Steve Buscemi), Griffin the Invisible Man (David Spade), Murray the Mummy (Keegan-Michael Key) and Blobby the Blob (Jonny Solomon) to help train Dennis to become a monster, to no avail.