A beautiful maiden, Marya Morevna, gives her prospective husband, the mighty warrior Nikita Kozhemyaka, three riddles to solve before she'll marry him. Before he can tell her the answers, the Russian land is invaded by the armies of Kashchei the Immortal, in whose footsteps death and destruction follow. Marya is abducted by Kashchei, and Nikita finds his home in ashes. Nikita meets a kindly wizard who gives him a cap of darkness. With it, the hero will find a way to save his bride and rout Kashchei.
The son of an obstinate mayor cannot get his father's consent to wed the beautiful Hanna. He receives unexpected assistance from evil, mysterious forces – Satan, witches, and rusalki – who work together to bring the couple happiness, bringing mayhem and celebration.
The film was made on the basis of the literary version of events in the life of the famous Russian ethnographer, anthropologist, biologist and traveler who studied the indigenous population of South-East Asia, Australia and Oceania.
