Katia, a volunteer from Kyiv fighting against the invasion of Ukraine, uses a laptop donated to the resistance and comes into contact with the young son of the computer’s original owner, who is desperately in search of his missing parents. Her attempts to help the child will see her risk all she holds dear.

This fairy tale tells about famous Ukrainian warriors Cossacks, about Paradise and hell, Christmas and evil forces. The Devil makes an agreement with St. Peter. If he can capture the best Cossack warrior and hold him until Christmas night, he will be able to wipe all the Cossacks off the map. The script for the movie is based on Sashko Lirnyk's story "About an old Cossack, a Christmas devil, four horns and a Cossacks".