Cymbeline is the King of Britain. He marries an unpleasant woman who has an arrogant son called Cloten. Cymbeline arranges the marriage of his beautiful daughter, Imogen, to Cloten but she defies him and marries the poor but worthy Posthumus Leonatus. Several plot lines follow, involving disguises, mistaken identity, deceit, treachery and poison. The villain of the play is Iachimo, who bets a large sum of money against Postumus’ ring that he can seduce Imogen.