Cephalus is a messenger from Athens who travels to Aegina to ask for their support in Athens’s war against king Minos. Cephalus hears king Aeacus’s story of Aegina’s plague, and shows Aeacus’s sons the magic spear that his wife Procris gave him. Cephalus and Procris are in love with each other, but many things get in the way of their happy marriage. Nymphs and goddesses who are unsuccessful in wooing Cephalus fill his head with suspicions that Procris is cheating on him. To discover the truth, Cephalus decides to test Procris by disguising himself and wooing her. Procris at last gives in to his seductions, at which point Cephalus reveals himself and calls her a slut. Over time, Cephalus persuades Procris to forgive him for his trick, and they live happily together again. However, their loving marriage ends tragically when someone overhears Cephalus speaking lovingly to the wind and tells Procris that Cephalus is having an affair with a nymph. To find out the truth, Procris follows Cephalus into the woods and catches him whispering to the wind. Cephalus hears her movements and, thinking she is a predator, impales her with his magic spear and kills her.