Twelve-year-old Mitya Privalov dreams of becoming a superhero comics artist. But his robotics engineer parents want him to follow in their footsteps.

This time, in keeping with the best traditions of the first two parts, Mothers tells a beautiful, fascinating, lyrical and funny story of the three mothers that takes place in a small European town on New Year’s Eve. The three mothers are flying to Prague on New Year’s Eve.

Igor, a senior manager at a furniture showroom, dreams of being promoted. One morning, after an office party, he finds the showroom completely trashed. The staff claim that when they left the night before, everything was in order. This is a disaster for Igor, whose career is now at stake. Trying to reconstruct the events of the fateful night, Igor learns some shocking details about his colleagues' nocturnal escapades...