Dracula is a grandfather in the first trailer for Hotel Transylvania 2, and he’s determined to bring out his toddling grandson’s inner monster. When Drac’s daughter Mavis considers moving out of the hotel to find a safer home for her kid, Drac gets desperate — and things get worse when Mel Brooks shows up as Drac’s dad.

We didn’t love the first Hotel Dracula movie, but we didn’t loathe it either. Fortunately, like the first movie, the sequel is in the hands of director Genndy Tartakovsky (Dexter’s Laboratory, Samurai Jack), and it looks like more of the same light, silly entertainment. Plus, we like the idea of Mel Brooks as a stodgy old vampire great-grandpa. Here’s the official synopsis:

The Drac pack is back for an all-new monster comedy adventure in Sony Pictures Animation’s Hotel Transylvania 2! Everything seems to be changing for the better at Hotel Transylvania... Dracula’s rigid monster-only hotel policy has finally relaxed, opening up its doors to human guests. But behind closed coffins, Drac is worried that his adorable half-human, half-vampire grandson, Dennis, isn’t showing signs of being a vampire. So while Mavis is busy visiting her human in-laws with Johnny – and in for a major cultural shock of her own – “Vampa” Drac enlists his friends Frank, Murray, Wayne and Griffin to put Dennis through a “monster-in-training” boot camp. But little do they know that Drac’s grumpy and very old, old, old school dad Vlad is about to pay a family visit to the hotel. And when Vlad finds out that his great-grandson is not a pure blood – and humans are now welcome at Hotel Transylvania – things are going to get batty!

Hotel Transylvania 2 hits theaters September 25, 2015.