An embittered penitentiary social worker receives an unwelcome blast from the past when the case file of his father, a convicted murderer who has been emotionally broken by prison life, lands on his desk.

I Soliti Idioti return to the cinema ten years after the second film and many things have changed in the world. We will see the most beloved characters compete with the contemporary, with the same cynical and amused eye that distinguished the previous episodes. This new adventure focuses on a current and universal theme: the family.