“I waited a thousand years. As a weasel.” Leonie, the princess that destroyed a country, is given eternal punishment. Not as a human… but as a weasel! One day, after a thousand years of hiding in the forest, a boy who understands the words of a weasel appears! He even confessed to it being his first love! But Leonie, whose love cells had dried up… “After a thousand years, I can finally die!” I only intend to use this innocent boy! Chanjae, a hopeless devotee who fell in love with princess Leonie, a mage who became a weasel, as well as a figure he longed to meet from a history book he had read.