The Chalice of the Annual Circle broke, and the fragments scattered across the earthly and heavenly worlds. If you don’t collect it again, spring will never return to the town of Pryamichev. Thunderbolt, who is called the son of Perun, suddenly discovers that he has become the last hope for people. Who else, if not him, can fight the Winter Wolf, who is trying to devour the sun? But this is not enough, because the roots of the trouble that has sprouted on earth are hidden in the world of the gods. It is there that Thunderbolt must go to bring back spring to the people who yearn for it.