Years ago Lonestarr's father stole the One Onion ring from Scroob's father. When Barf finds the Onion Ring stuck in an old couch inside the Eagle 5, Yogurt sends him on a quest to throw the Onion Ring into the deep fryer of Lardor. Meanwhile Skroob orders Dark Helmet to build him a dark army. Unfortunately they end up with a dork army instead.

The Spaceballs have mixed Ecoli with Ebola to create the deadly soft-drink 'Ecola'. Barf, who has been put on a soft-drink free diet, starts an epidemic on planet Moron.

Lone Starr needs a million Starbucks to pay Vinnie protection money. Vespa wants a million Starbucks to buy matching his and hers space-jets. So Vespa enters the Druidian Idol singing competition as 'Vespacia' and Barf as 'Kelly Barfson'. But President Scroob, anticipating their presence, uses a brain-zapper to turn the entire audience into mindless killers.