One Monday morning Katya, Vika and Zhanna learn that there will be a school disco, their first disco, on the coming Saturday night. The girls feverishly start preparing for the event, which rapidly becomes the most important moment ever in their universe, and looks like the ideal way to escape their daily lives...
Moscow, year 1982. Scientist Matvey Pyotrovsky creates a time machine and conducts a scientific experiment, which divides the apartment in two parts. It's first part is left in the 80-s with the professor, while the second one is transported to year 2020 to a modern family: businessman Sergey, his wife Svetlana and daughter Kristina. This kind of coliving creates a lot of trouble for everybody, since layering of two times means each of the families has lost access to the other part of the apartment. But problems don't end there: inventor's grandson Pavel, after waiting for 38 years, tries to prevent one tragic incident.
