In this allnew monster comedy adventure, everything seems to be changing for the better at Hotel Transylvania! However, Drac is worried that his adorable halfhuman, halfvampire grandson, Dennis, isn’t showing signs of being a vampire. So while Mavis is on vacation, things get batty as Drac enlists his monster friends Frank, Murray, Wayne and Griffin to put Dennis through a “monsterintraining” boot camp!