KAOS has devised a new chemical that has wiped out ninety percent of the U.S. potato crop. While flying to Idaho, Max becomes convinced that he keeps seeing the Red Baron, but 99 and the Chief never see him. Since they're in Idaho, Max and 99 stop in at her mother's house so that Max can meet his future mother-in-law. During coffee, Max looks out the window and sees the Red Baron again, but it's only 99's mother's new neighbor, Mr. Smith. 99 and Max go to investigate Mr. Smith's farm and discover that Mr. Smith is actually Siegfried. He is working as a crop duster, secretly spraying the germ that is killing off all the potatos. Max and 99 escape the clutches of Shtarker and Max is forced to take on Siegfried in an aerial duel.

This episode marks the first use of "Zis is KAOS, Ve don't ___ here."