The group is concerned about global and environmental issues. They want to take action, but must find a base to work from. Meanwhile, off the coast of Brittany, a new environmental disaster is occurring...

Maestro listens as the kids tell him about all the things they see going wrong in the world, their fears, and their frustration that so little is being done. He wants to know if they have any solutions.

Maestro shows what can happen at conferences on the environment, where the blame is passed from person to person and little is resolved. But he also sees the necessity of paying attention to such issues, and encourages the kids to continue with their own plans to promote change.

Traveling aboard the flying globe that Maestro himself has invented, the young environmentalists set out to see the situation in other parts of the world up close.

Maestro takes the kids across the world to show them what is being done to deal with the worst issues related to waste and pollution.

The kids are frustrated with how slow things seem to be progressing, but Maestro boosts their enthusiasm with some good news: Their search for a workspace is over, and a new environmental movement is born — The Guardians of the Planet!