"Götterdämmerung," meaning "Twilight of the Gods," is the final opera in Richard Wagner's four-opera cycle known as Der Ring des Nibelungen. It tells the story of the downfall of the gods and the destruction of the world, focusing on themes of love, betrayal, and fate. The opera features the tragic fate of Siegfried, a hero who is ultimately betrayed, leading to a series of catastrophic events. The opera culminates in a dramatic conclusion where the Valhalla is consumed by flames, symbolizing the end of the old order. The characters' struggles reflect the consequences of their actions, emphasizing the cycle of power and its inevitable decline.