The film is a poetic adaptation of a series of stories (oral and written) about Princess Olha of Kyivan Rus' (Ukraine-Rusʹ) at the start of the 11th century. Inspired by chronicles and folk legends this is a story of a common girl Olha who married Prince Ihor and became his successor on the throne after his murder and one of the most remarkable political leaders in early medieval European history. She converted to Christianity and brought her realm into Europe.

Once, a young man, Sandy, undertook to transport two strangers to Snake Island to the palace of the wealthy Hanover. The landlord, admiring the courage of a young sailor who was not afraid of the stormy weather, invited the young man to be his guest. Walking around the fabulous palace, Sandy accidentally finds out the story of Hanover.