Liza Kochy wants to do an internet video with Shaggy and Scooby, comparing pizza while being scared in a haunted house. Liza has decided to film it at the old Thraber house, supposedly haunted by the ghost of Charles M. Thraber and his floating musical instruments!

Daphne takes the gang to see her celebrity bestie Kacey Musgraves in Nashville where she is performing.  However, a phantom is on the loose, attacking artists it doesn't like!  Can Kacey manage to tell her story of the "Hot, Hot, Hot Sauce" before the Phantom closes her show?