Is there a water monster living in Walkerville Lake? To find out, Ms. Frizzle turns the Magic School Bus into the Magic Bus-Boat, which sinks to the bottom of the lake and gets to the bottom of the mystery.
The Magic School Bus takes Ms. Frizzle and her class on a trip to the Museum of Natural History. During the trip the class travels back to the Mesozoic Era and experiences a first hand Jurassic adventure!
Keesha's ant disappears, and the kids have no choice but to follow, all the way into an anthill. Come along on a zany field trip and learn how ants work together.