Scooby-Doo, Shaggy and the gang are geared up for a relaxing vacation. Just make it anyplace with no ghosts or monsters! But, like, how very Velma to steer the Mystery Machine to Vampire Palooza. It's not much of a scene until a singing vampire theater troupe, headed by pasty heartthrob Bram, meddles with an ancient resurrection chant, bringing the powerful vampire Lord Valdrona back to life. Now the festival is hopping, the stakes are flying, and the gang is in danger. Shaggy is sure he's been bitten - Scooby-Doo, save yourself! - and lord Valdrona wants Daphne for his bride! In this all-new movie, the creatures of the night aren't the only ones vamping it up. The whole gang is ready to sing and dance their way out of this one!