Martino's sister, Caterina, can't work anymore for health reasons and he replaces her as cleaner for dr. Guglielmo Gioia, a mental coach. While the doctor leaves, Martino pretends to be his assistant.
A committed environmentalist whose hyperfixation with everything that's wrong with the world is taking a toll on his marriage tries a pill that reduces human mental skills from 20% to 2%.
