A couple returns home every night with one eye on the wall, watching for their every move and smiling.

The insecure girl Sasha is lying to her family that she is dating handsome Cyril, although he is just her running coach, with whom she is afraid to even speak. Sister Pasha's husband knows the truth, but he has enough of his own problems - he and his wife have not had sex for a year. Having signed up for running therapy together, Sasha and Pasha decide that they can get away from problems together.