Hotel owner Dracula (voice of Adam Sandler) is concerned that his half-human grandson Dennis isn't embracing his vampire heritage. He and his fellow ghouls put Dennis through a "monster-in-training" boot camp, but their efforts are complicated by the arrival of Dracula's dad, a traditionalist vampire named Vlad (Mel Brooks). Andy Samberg, Selena Gomez, Kevin James, Steve Buscemi, David Spade, Keegan-Michael Key, Fran Drescher, Molly Shannon, Megan Mullally, Nick Offerman, Dana Carvey, and Rob Riggle also lend their voices to this animated sequel.