Ivanka from her childhood dreamed to become a kozak and fight for the native land, but the order forbids women to stay in Sichi. The girl can't accept the role imposed on her - to engage in hut farming and prepare for marriage. And when her husband is kidnapped by the poplichniki of the evil Tsar Poganin, Ivanka rushes to the aid of the well-known heroes of the Sichoviks. Will the girl be able to become a twin to the glorious Cossacks, will she be able to get her husband out of the clutches of Poganinski and will she be accepted by the Sichi brotherhood? And most importantly - will she be able to stay herself for any circumstances?