A farmaceutical salesman is involved in the spiral of corruption in the medical assistance of the welfare state system.

Luigi Di Santo is a professor of philosophy in Milan who returns to his Apulian hometown to finalize the sale, together with his brothers, of an old family farm. But this project is hampered by his violent stepbrother Aldo. Things degenerate further when the four brothers find themselves embroiled in a murder.

A factory worker in the south of Italy, frustrated by work and marriage, withdraws into nature, but in the search for love and human warmth he ends up "on the dog" in the sense of the word.