The shepherdess Iris, however, has decided to leave the celebrations early because she has abandoned love for "happy and wise indifference."
Before leaving, she announces that the shepherds and shepherdesses are about to see a performance of a story in which jealous love curses Medusa with a horrible transformation.
The shepherds and shepherdesses break into a chorus celebrating Louis XIV, who grants peace to his kingdom, as long as his enemies do not force him to wage war.
Orphise and Melante question Méduse's agitated demeanor, assuring her of her fortune in the fact that Neptune has promised to defend her beauty against Minerva's.
She argues that, even if she appears to show signs of falling in love with Persée, she is in fact only intent on bribing him away from his defense of Minerve.
Ismenie arrives onstage and confesses that she is frightened that Minerve will punish their love because it distracts Persée from his duty to glory.
As soon as she and Persée board their vessel, sea monsters who support Méduse create a tempest that causes the ship to strike a rock.
Act IV The scene takes place in the garden of the Hesperides, where the trees carry golden apples.