Scooby-Doo! Music of the Vampire (2012)

Grey Griffin, Matthew Lillard, Jim Cummings, Frank Welker

After being tired of always monster hunting, the gang decides to go on a vacation free of any spooky stuff and hopefully mysteries. They go to the Little Bat village for the Vampire Festival and for the author of some Vampire books Velma enjoys. The author ends up being the oldest living Van Helsing