Get ready for a insect filled adventure. Ms. Frizzle along with her science-curious class are at it again, but this time to help find their long lost bugs. A terrible mishap occured with the kids' terrariums -- each is missing one of its bugs. Climb aboard the Magic School Bus to help Ms. Frizzle and has class find them. Then, get ready to shrink down to wee bug size and explore the wild world of bugs.