The Magic School Bus : Season 2

Ms Frizzle takes the bus (and class) to R.U. Humerus' extraordinary Body Shop for repairs -- but Ralphie seizes the opportunity to build a robot to do his chores. The class joins in and they discover how bones, joints and muscles work together to help us move. But they do the job a little too well, and the Ralphiebot starts to take over. Can Ralphie stop the robot before it's too late?

Ms. Frizzle takes the class to a dinosaur dig, courtesy of her old school chum, paleontologist Dr. Carmina Skeledon. To complete the field trip, they travel back in time — 67 million years — to see what dinosaurs were really like! Arnold's fossilized egg, put in his care by Dr. Skeledon, is snatched by a dinosaur and he ends up squaring off with a T-Rex. To their relief, the class finds out that even the fiercest dino's prefer flight to fight.

The class needs a new mascot for their soccer team. Everyone laughs at Phoebe when she suggests using a butterfly, and Arnold's know-it-all cousin, Janet, suggests the mysterious Bog Beast instead. Ms. Frizzle takes them on a field trip to Butterfly Bog where they discover camouflage and other butterfly tricks of deception — learning just how clear and unwhimpy butterflies can be — while unmasking the mysterious Bog Beast!

Arnold and Wanda are due to give a report on the town waterworks. But Ms. Frizzle thinks it's field DRIP time! She turns the bus and class into water drops and the kids evaporate, condense, become rain and rush by river into the ocean. After several trips through the water cycle, they're ready to turn back into regular kids. But the magic key that will get them out of the cycle is locked in the school bathroom! Trying to work their watery way into the bathroom, the kids go through the town water

Keesha returns from vacation to find that her prize cucumber has been stolen and was replaced with a smelly old pickle. When the evidence seems to point to Ms. Frizzle as the culprit, the class puts her on trial, with Keesha as prosecutor and Arnold as defense attorney. The Friz says a tiny group of troublemakers called the Mike Robe (microbe) Gang is responsible and takes the class for a visit into the teeny tiny world of microbes. There, they discover that even tiny living things can have a bi

The class plugs their Double-Trouble Wheel of Wonder, the hottest ride at the school carnival, when their electricity fails. No electricity, no ride! Carlos' younger brother Mikey helps them discover that there are other sources of energy besides electricity. Using wind, water, the heat of the sun, falling rocks, and their own muscle power, the class gets the Ferris wheel running.

A monster is sighted in Walkerville Lake! Wanda wants to be first to go under water to find it, but the bus refuses to sink! Meanwhile, Gerri Poveri, a journalist, who needs this monster to boost her sinking ratings, doesn't want Wanda anywhere near the lake. The kids discover there's more than one way to make a bus sink, and in the process discover the real monster of Walkerville Lake.