The Princess and Lion-Hearted Mice

King Black Brute was a tyrant whose passion was power. He allied himself with the King of the North who was power hungry.
King Black Brute had a beautiful daughter whose name was Princess Gentle-Spirit. The King had betrohed her to the King of the North- against her will. The Princess had fallen in live with the Prince of the Green Woods who her father had vowed to destroy, because the Prince believed in human rights. The Princess discovered her father's cruel plan, which upset her.
The Princess had made friends with the villagers and had left the castle. The villagers told her that the Kind ordered his soldiers to beat anyone who has not paid their taxes and she sought to help them. When se returned to the castle her father threw her into the dungeon.
How will she escape and let the Prince know of her father's evil plans.