In 1668 the Ottoman Empire decides to attack and invade the Polish-Lithuanian Commonwealth which is one of the few major European powers to still stand in the destructive path of the Ottomans.Having recently retired to a monastery,Polish Colonel Michael Wolodyjowski is no longer in active duty.However,the Polish king,Jan Sobieski knows that Colonel Wolodyjowski is an able commander and sends for him,recalling him to active duty.Joining his old comrades in arms,including the English noble Ketling Hassling of Elgin, Colonel Wolodyjowski takes command of the Polish defenses on the Eastern Frontier.He prepares for the arrival of the invading Ottoman armies and Tatar Hordes and waits.The fate of Christian Europe lies in his hands.