The myth involving a hero who must travel to the underworld to retrieve a loved one is the story of Orpheus and Eurydice. In Greek mythology, Orpheus is a talented musician who descends into Hades after the death of his wife, Eurydice, to bring her back. His enchanting music softens the hearts of Persephone and Hades, allowing him to attempt the daunting journey. However, his moment of weakness leads to tragedy, highlighting the themes of love, loss, and temptation.