How to Ghostbust a Bathroom

Galifianakis dreamed of becoming a star. But when Will Ferrell discovered his public access TV show, 'Between Two Ferns' and uploaded it to Funny or Die, Zach became a viral laughing stock. Now Zach and his crew are taking a road trip to complete a series of high-profile celebrity interviews and restore his reputation.

Mystery Inc. withdraws from solving crimes after botching a case. When Vincent Van Ghoul contacts the gang about an unfinished investigation from Daphne, Shaggy and Scooby's past, the gang springs into action to finish the job that involves catching the 13th Ghost that escaped from the Chest of Demons and is still at large.

The Scooby gang visits a culinary resort run by Fred's uncle, Bobby Flay. While enjoying the sights, a ghost attacks the guests and destroys the resort, leaving the gang to put a stop to its threat.

A sorority moves in next door to the home of Mac and Kelly Radner who have a young child. The Radner's enlist their former nemeses from the fraternity to help battle the raucous sisters.

A group of students visit a mansion called "Hell House," and murderous high jinks ensue.