When seventh grader Jeannie learns that Keelor Construction plans to exterminate two prairie dog colonies to make way for construction projects, she takes immediate action. From taking part in a protest, to organizing a petition drive, to speaking before city council, Jeannie fights to save the threatened animals. She manages to balance this activism with her schoolwork and auditioning for the school talent show with her best friend, Mary Jo. With support from her friends, schoolmates, family, and other adults, Jeannie learns the power of people acting together, and that anyone can make a difference if they decide to act.