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Under the spell of an old Carpathian molfar, twins Ostap and Darynka are transported back in time. To get back, they need to rescue the opryshok Ivan and his beloved Marysia, the daughter of the voivode of Zolochiv Castle, from the spell of a black sorcerer. In order to overcome his spell, the children will have to overcome a long and difficult journey through the impenetrable thickets of the Carpathian forests, the dark dungeons of Lviv churches, and the impregnable walls of castles guarded by ancient spirits and ghosts. And then they have to overcome the terrible witch-queen Bona to save their little sister Olenka...

But when they are together, nothing will stand in their way!