At a summer camp in the San Bernardino Mountains, 15-year-old camp counselor, Andy Lipkis, learns that air pollution from the city was killing Southern California’s forests. The US Forest Service rangers share with the campers that the trees were dying so quickly there would possibly be no forest remaining by the year 2000—unless someone replanted the forest with smog resistant trees. Lipkis decides it was up to kids like him and his fellow campers to take action and save the forest.
