"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. Wanda wants to be the first to go underwater and find the monster spotted in Walkerville Lake. But there's one problem: the bus won't sink. The class works together to make the bus sink by adding weight. They make it to the bottom of the lake and to the bottom of the monster story.