1757 year. Septennial war that afterwards Winston Черчилль christened the "first world war" from participating in her the most European and American states flames up in Europe. A Captain-lieutenant Alexander Белов continues to do a military career and gets setting in a cuirassier regiment on position of captain of cavalry. Aleksej Корсак, a convalescent after a heavy wound got that in a sea-fight under Мемелем, hot discusses the folded position with old a friend, prince by Nikita Deer. However nobody of them, evil naval cadets, does not imagine that a fate in the person of all-powerful chancellor of empire Бестужева already prepared a new, mortally dangerous test for friends. And to overcome all barriers, they will have again to remember a favourite motto: "Fate and motherland are single"!