The medieval romance Tristan and Iseut tells the tragic story of the passion between the knight Tristan and Iseut, who are destined for others. As Tristan escorts the beautiful Iseut to marry his uncle King Marc, they accidentally drink a love potion intended for the king and queen. This potion causes them to fall irrevocably in love, though they try to fight their destiny, which can only end in sorrow given their duty to King Marc.