Architects Tina and Stas Kirillov acquire a cozy country house. The family is doing well - both in personal aspect and at work. Tina's friend since their student years Maryana has always been in love with Stas and tries not to lose sight of the couple. Maryana is married to Alexei, but her heart still belongs to the former fellow student. Gradually, envy of the personal and professional success of Tina and Stas gets stronger and stronger, and now the ill-wisher is ready to step over a lot in order to steal the husband from her ""sworn"" girlfriend.