The classic myth that involves a hero who captured the heart of his beloved but lost her to the underworld is the story of Orpheus and Eurydice. Orpheus, a talented musician, descends into the underworld to retrieve his wife after her untimely death. Overcome by emotion, he mistakenly looks back at her before they escape, losing her forever. This myth explores themes of love, loss, and the consequences of human weakness, emphasizing the enduring struggle between life and death.