Ms. Frizzle takes the class on a camping trip, but Arnold is worried about monsters, and sets out to create a "Monster Scaring Perimeter" powered by a generator to keep the lights on--and in the process the class learns about sources of clean energy (and maybe monsters).
General Note: At head of title: The magic school bus rides again."Based on the Magic School Bus series [created by] Joanna Cole and Bruce Degan"--Colophon."Based on the television series The magic school bus: rides again"--Colophon.LSC 6.99