An elderly taxi driver Makarych unexpectedly becomes the main suspect in the murder of politician Remezov, a candidate for mayor of their town. Makarych has two adult children, and each of them seeks to prove the innocence of his father. The eldest son Vlad is an employee of the local FSB, he is removed from the official investigation, but he cannot stand aside. The youngest daughter Tina is trying to get to the bottom of the truth for her part: she participates in fights without rules and rotates in near-criminal circles. The trouble is that Makarych's children have not spoken to each other for a long time, and therefore cannot join forces. Moreover, over time, Vlad begins to suspect that his father is not as pure as he thought. And Tina begins to suspect Vlad... And she is not alone.