On Max's birthday, he finds a sort of magic mirror in the attic. It can make him become invisible.

Pedrico disobeys his mother by going into Señor Gregorio's garden and almost gets caught.

Clifford, a small red puppy, helps Emily Elizabeth and her parents decorate the Christmas tree, wrap presents, and enjoy Christmas day.

The students of Ms. Frizzle's class embark on another journey when the Magic School Bus tours a decomposing log that introduces the latter end of the life cycle and teaches readers that there's more to rot than meets the nose.

Ms. Frizzle, using the magic school bus, takes her class back in time to see the dinosaurs firsthand.

Clifford the small red puppy valiantly tries to celebrate Halloween with Emily Elizabeth, but he is too small to wear a mask or dress up as a scary ghost, and decides to climb into a pumpkin and turn it into a barking jack-o'-lantern.

A class trip to the beach becomes an underwater lesson about food chains when Arnold and Keesha are challenged to discover what a tuna fish sandwich and some smelly green pond scum have in common.

Filming Keesha's pet ant for a science project fair, the students in Ms. Frizzle's class take a journey into the lives of ants during which they learn about the ant community.

Driven batty by their lessons on nocturnal animals, the students in Ms. Frizzle's class participate in a nighttime adventure that features the bus's new wings.

Arnold brings in a strange old object that nobody can identify but about which everyone makes wild guesses, so a trip on the Magic School Bus takes Ms. Frizzle's class on an exploration of archaeological research.