Ch 30-1: It was like lightning/ Everybody was fighting/ And the music was soothing/ And they all started grooving/ And the man in the back said everyone attack/ And it turned into a ballroom blitz/ And the girl in the corner said boy I want to warn you/It'll turn into a ballroom blitz/ It's it's a ballroom blitz/ It's it's a ballroom blitz/ It's it's a ballroom blitz/ Yeah, it's a ballroom blitz!

Oh, an actual synopsis? Well, the ground explodes with monsters so the Deadites stop celebrating and start exterminating. In the wake of the chaos, they try to get to the bottom of what the heck just happened, and who's to blame.