After the tragic death of their mother, the father and son are preparing to leave their home to start life with a clean slate. However, their plans are hindered by a mysterious girl, whom the son meets on the river bank.

Kira is 36. She works at the Pulkovo Airport call centre and lives with her younger sister Vera and her daughters. A couple years ago, their mother kicked the sisters out of the house and later disappeared. It's time for Kira to accept that her mother is dead and move on: get the death certificate, claim her inheritance and start living separately from her sister and nieces. A new life awaits her. But Kira does not want to change anything and dreams only of her mother coming back.

Artyom is 15 years old. This is the same age when you are not an adult, but also not small. It was in this, the last summer of childhood, that everything fell on Artyom at once: the betrayal of his father, who remained abroad after the tour, first love, friendship forever and quarrel forever. Artyom has only a skateboard - this is how in the 80s in the USSR they called skate, which Soviet teenagers had just begun to learn about. Now Artyom needs only one thing: by all means to win in street competitions.