An imaginative mouse who likes to read heroic fantasy novels finds herself on the school math team as it prepares to compete for the coveted Golden Slide Rule.
Move over Mozart! Babymouse has music in her soul...but sadly, not in her flute. Will Babymouse ever hit the right note? Will she be the star of the school concert, or is her musical career all washed up before it's even started?
When Babymouse's art class goes on a field trip to the museum in the big city, she decides to test her freedom by exploring the city without a chaperone.