Casanova is love with Francesca, who thinks he is a friend of himself even though he is engaged Victoria, who is the love of Giovanni, Francessca`s brother. Francessca is betrothed to Paprizzio who thinks Casanova is the feminist writer Guardi, who is really Francessca`s nomme de plume. Amidst all these secret identities and misunderstandings, the Catholic Church sends Pucci to bring Casanova and Guardi to trial for heresy.