The story that illustrates the theme of redemption in mythology is that of Orpheus and Eurydice. Orpheus descends to the underworld to retrieve his beloved wife, Eurydice, demonstrating his deep love and commitment. His journey highlights themes of loss and the power of love but ultimately ends in tragedy when he disobeys Hades' command. This tale reflects the complexities of desire and sacrifice, emphasizing the bittersweet nature of love and redemption.