Among the Cossacks, the chief hetman, and the atamans are generals. 1558, the Cossacks are at war with the Ottomans and the Crimeans. Maria Malinova the only girl ataman. She has always been noble, positive and playful. But now she is cold, ruthless to enemies and unemotional. She always finishes off enemies and takes no prisoners. She earned the nickname "Bloody Mary". Nobody knows why she changed. In addition to Mila Mlynsky. Only he knows why Maria has changed so much... And he feels guilty