Modern Russian Empire. The solemn coronation ceremony of young Catherine III turns into an apocalypse: for the first time in 780 thousand years, the Earth's magnetic poles change places. The world is plunging into medieval chaos. The subjects blame the inexperienced empress for everything. Great Spain immediately declares war on a weakened Russia. Catherine will have to confront a powerful enemy in conditions of complete blackout and popular discontent. Will the naive young lady in the crown have time to become the Empress for real before she is overthrown from the throne or deprived of her life?