Orpheus is Apollo, the sun god's son. He has feelings for Eurydice, but she dies tragically. Orpheus journeys to Hades, the underworld, in an attempt to regain his wife. When he reaches the river Styx, it is where souls of the dead must pass into eternity. But Orpheus plays his lyre so beautifully that Zeus, king of the gods, commands Hermes, the messenger god, to let Eurydice return to earth for one day only. If Orpheus can retrieve her before midnight, then she will join him in heaven forever. Orpheus sings so enchantingly that he wins over Pluto, ruler of the underworld. With this agreement, all those who listen to Orpheus' music will also be saved. So many people have been saved through Orpheus' singing that there are reports of him saving even the souls of animals. This makes some scholars believe that he was not a real person but rather a myth created by the ancient Greeks to explain what would otherwise be an inexplicable event: The survival of some people after they had died. Miracles were events that occurred without any apparent cause other than God's will. People throughout history have claimed to see miracles, but only those who have witnessed them first-hand can truly say if they were true miracles or simply products of human imagination or deception.