Pippo, a tailor, impersonates Casanova to woo the girls, particularly the widow Bruni. Casanova has left town, pursued by creditors who persuade Pippo to impersonate Casanova at the behest of a Genoan family that will pay "Casanova" to test the fidelity of the son's betrothed.
Pippo, the widow Bruni and Casanova's valet Lucio travel to Venice. The Doge of Venice, "a snake with whiskers," to use Pippo's description, intends to use the intended seduction as an excuse to wage war against Genoa. After many humorous adventures, exploiting Pippo's traits of vanity, arrogance and cowardice, the heroine so impresses Pippo with her dignity that he refuses to cooperate in the plot to ruin her character. He is arrested by the Doge and sentenced to death by beheading. A desperate Pippo turns the audience for help, but is shocked when they prefer that he lose his head.
