Erin Wrenn and her friend David are in big trouble because they refuse to go on a field trip to the Glitter Tent Circus. They wrote a report on the sad lives of circus animals and discovered that the Glitter Tent Circus is one of the worst animal abusers of all. Mrs. Dawson is determined to give her students the happy circus experience she remembers from her childhood; she won't let Erin and David share their report or pass around a petition asking for a different field trip. Erin is determined to force Mrs. Dawson to change her plans...or she'll stage a sit-in at school.

Then Erin sees an even bigger problem: Lilly, a mistreated elephant, is about to be sold to a hunting park. How can she save Lilly before it's too late? It seems impossible!

Can one girl -- and a class of sixth graders -- make a difference?