1709. In Versailles, two nobles, having argued over a game of cards, break the ban on dueling and find themselves between a prison and an executioner's block. King Louis XIV replaces execution with exile in the warring armies of Sweden and Russia. One of the guilty nobles was sent to the camp of Tsar Peter the Great. The second - to the Swedish King Charles XII. Court intrigues and love affairs are behind them. A road full of dangers awaits the French in front of them. Prince Menshikov sends one of his officers to investigate the disappearance of Russian couriers. Fate pushes all the heroes on the eve of the Battle of Poltava.