The Parents of Mike, Peggy and Nora are held captive in the Secret Mountain in Africa.
When Nick and Katie's friends, Sophie and David, inherit a mysterious cursed ruby they disappear soon afterwards.
Bats are living at Tim's house. . . but where did they come from? Ms. Frizzle and her class are on the case!
Ms. Frizzle's class is learning about birds. The Want to see a real nest, but Carlos gets to close! will the Magic School Bus come to his rescue?
Ms. Frizzle's class is on its way to a pool-a tide pool. The kids spot everything from seaweed to seashells. But then they run into some real crabs!