A group of children guides us to seek reasons why we should separate rubbish collection: what and how is separated from what, where does the rubbish finish up, what can and has to be done, and, moreover, what is going on in Chieri, their hometown? A new door-to-door rubbish collection method is changing families' habits. The children give us an account of the hows and whens things happen through their own toys, talks with experts, and a visit to the rubbish collection areas.
