For two years, wounded Elara tends to Prince Kastor while he cannot see. Once his vision is restored, he turns to her sister, unaware that Elara had been haunted by the resemblance between him and Theron, her vanished beloved. Determined to search the sea for Theron, she leaves the court behind. Kastor pursues her into dangerous waters, where deception surfaces, Theron returns, and devotion proves beyond a crown's command.