In the ancient kingdom of Thalassa, known for its vast oceans, lived Arion, a young and ambitious sailor. He was betrothed to Althea, a maiden whose voice was said to calm even the fiercest storms. On the eve of their wedding, a prophecy was uttered by the Oracle: "To save Thalassa from a great calamity, Arion must venture into the heart of the Oceanus, the uncharted waters no sailor has ever returned from."