Friends Aldo, Giovanni, and Giacomo travel from north to south for Giacomo's wedding: the father of the bride, a tyrannical rich man who is both their boss and father-in-law—since Aldo and Giovanni have also married into the family—has entrusted them with a costly piece of modern art, one that looks just like a rather unremarkable wooden leg.
Con man Aldo breaks out of jail and seizes a car at gunpoint, taking its passengers—bumbling police officer Giacomo and nitpicking civilian Giovanni—hostages. An unlikely friendship blossoms.
Pietro Zinni is asked by the police to revive the old gang to create a task force that will stop the spread of smart drugs.
