From the publisher:
How can you have an adventure when you aren't free to roam?
Henry the bear, modeled on the real Henry David Thoreau, wants to climb a mountain, but the tax collector puts him in jail. Henry refuses to pay taxes to a state that allows slavery. But being locked up doesn't stop Henry: he imagines splashing in rivers, swinging from trees, and meeting a stranger who is an escaped slave pursuing freedom.
A little civil disobedience can go a long way toward inspiring freedom for all.