"The Magic School Bus" is an award-winning, animated children’s television series based on the book series of the same title by Joanna Cole and Bruce Degen. It is notable for its use of celebrity talent and being both highly entertaining and educational. Ms. Frizzle turns the class into water so they can experience the town's water system firsthand. Not everything goes as planned, though, when they realize that Arnold has left Ms. Frizzle's magic keys in the girl's bathroom at the school. How will they turn back to normal this time?