Commander Bruscatelli, before being imprisoned, leaves the Posalaquaglia cousins a bill of exchange which they give to Temistocle Bisogni in compensation for the damage they have committed in his tobacco shop. This letter undergoes opposition, passes from hand to hand before returning to Bisogni who passes it to Posalaquaglia in exchange for false testimony. The two are arrested and find Bruscatelli, who renews the bill of exchange with another equivalent.
