Don Matteo is a thoroughly ordinary Catholic priest with an extraordinary ability to read people and solve crimes. He’s a parish priest who never met an unjustly accused person he didn’t want to help.
Achille Tarallo is an absent father and an unhappy husband. He drives buses in Naples for a living but his dream is to be a great crooner. In the meantime he sings at wedding parties with his best friend Café, waiting for their band manager Pennabic to make them famous. One day, Achille falls in love with the new caregiver of his mother, a kind woman from Eastern Europe very different from his nagging wife Elide.
