Cosimo di Rondo, a young Italian nobleman of the 18th century, rebels against his parents by climbing into the trees and remaining there for the rest of his life. He adapts efficiently to an existence in the forest canopy - he hunts, sows crops, plays games with earthbound friends, fights forest fires, solves engineering problems, and even manages to have love affairs. From his perch in the trees, Cosimo sees the Age of Enlightenment pass by and a new century dawn.
