The film's protagonist, Ewa, is waiting for her family scattered across Europe to return home on Christmas Eve. Finally, her husband, Adam, who works in Germany, shows up. Two more children are supposed to arrive. However, the evening does not go well. An old conflict breaks out between the spouses. Annoyed, Adam leaves the apartment. Ewa is left alone. But not for long. A young man knocks on her door - Mikołaj, who is... Santa Claus in a red hat, with a glued-on beard. He is handsome, witty and slightly drunk. Surprisingly, Ewa lets him into the apartment and starts an intellectual and erotic game with him. The situation becomes complicated when her husband returns to the apartment...