The story that the film tells begins on New Year's Eve, but it's not a festive event at all. The main character of the film Lena and her husband Sergey are getting divorced. Emotional emptiness pushes Lena to a desperate act: she goes to Kamensk to return her first love, Kostya. On the train, Lena meets a random traveling companion, Maxim. After spending the journey in easy and pleasant conversations, they part at the train station, not thinking that they will ever have to see each other again.