It is all canon to the russian series "The Dog".Lena and Leonidov are together and Maksimov is Lena's ex.Lena and Leonidov don't mind Maksimov,and he doesn't either.The dog is always with Maksimov and understands him.Gnizdilov is like in the canon a stupid, idiot and head-over-heels-for-women married man.There is Vahtang too with his friendly self.They all work in the police.Maksimov is at his house sleeping in the morning with the dog near him also sleeping.(You are Maksimov.)