Rather than cancel the band field trip to a Jazz festival when the school bus falls apart, Willy convinces Rock and Skunk to chaperone the trip on the Zilla tour bus. When the tour bus breaks down in the middle of the desert, the band class separates into two warring factions -- one led by Rock, the other by Coach Fettle. When a mysterious stranger arrives to help rescue our heroes, things quickly turn sour, and Willy and his bandmates learn that teamwork may be their only chance. Back at the Zilla mansion, Serenity and Crystal use Rock's absence as an excuse to discard an offensive lucky concert shirt - a feat that turns out to be much harder than expected