Difficult times have come for the village of Lambushki. One misfortune follows another, and there is no end in sight. According to the original owner of this land, Koshchei, the main reason for the disturbing events is a mysterious artifact called the Hyperborean Key. A magic wand made from the bone of a carnivorous unicorn attracts new troubles to the border of the earthly world and the Edge, where, according to an oath taken several centuries ago, the ancient family of the boyar Basanov stood as a barrier. Astrological forecasts, rune signs - everything shows that the hour has come. And a detachment led by the Forest Master goes to the mysterious Hyperborea in order to once and for all rid their native land of the dangers that attract the ominous Key.