Fergus, the pet mouse in Miss Maxwell's classroom, stows away in a backpack on a field trip to the museum. He makes a new friend, Zeke, another mouse, who shows Fergus many interesting exhibits, but now he wonders how to get back to school.

Classroom pets Fergus and Zeke can't wait for Field Day! But all the events are the wrong size -- what can these two little mice do? Fergus and Zeke love being the class pets in Miss Maxwell's classroom. From science experiments to art projects, they do everything the students do. But on Field Day, none of the events are the right size for the small mice -- the limbo is too easy, the high jump is too hard, and kickball is absolutely terrifying! So...

Fergus and Zeke love being the class pets in Miss Maxwell's room, and they do everything the students do. So when Miss Maxwell informs the class that Presidents' Day is approaching and they'll all be creating projects about the presidents, Fergus and Zeke get to work, too. Zeke tramsforms into George Mousington and nominates himself president of their cage. But when Zeke seems more interested in being in charge than in working on their project, Fergus...