Il Bellerofonte
Bellerofonte, whose birthright to the throne of Corinth has been usurped, is separated from Argene because her father Ariobate considers him an unsuitable match for a princess without a kingdom. Bellerofonte proves his worth by killing the monster that demands a noble virgin as a yearly sacrifice. When news arrives that the usurper Clearco has been overthrown, Bellerofonte can reclaim Corinth and Ariobate agrees to his marriage with Argene. Briseide, who was to be sacrificed, also finds a husband.