Five seventh-graders concerned about climate change work with a retired lawyer and an activist grandmother to build an international movement to amend the United States Constitution, protecting humanity's right to live on a planet free of pollution and warming.

Roy, who is new to his small Florida community, becomes involved in another boy's attempt to save a colony of burrowing owls from a proposed construction site.

A class field trip to Camp Go Green inspires Hope Roberts to take up environmental causes, but getting busy grown-ups (or her older sister) to pay attention to a middle schooler can be something of a problem, and so is Hope's expectation that everyone will share her enthusiasm; her science club gets her school to add more recycling bins, start a carpooling program and create a garden, but it turns out that saving the world is more complicated than...