The Heroic Quest of the Valiant Prince Ivandoe

Season 1, Episode 6: The Prince and the Swoony Swanstress

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Ivandoe hates swans, especially his worst enemy Prince Svan, but when Bert becomes smitten of a swanstress called Svandaline, revealed to be Svan's sister, who had lost her memory, for a moment he realizes that not all swans are swoony... Until Svandaline gets her memory back and bluntly and meanly rejects Bert.