The Russian crime series "The Teacher in Law" tells the story of Boris Bogomolov, known in certain circles as Bogomol. He used to be a thief in law, but now he has become a respectable teacher, found his son Ivan, and dedicated himself to taking care of him. They have settled together in a town called Solnechny. Ivan goes to school, while Boris Andreevich manages a children's home. He has no intention of returning to the criminal world, but fate has other plans in store for him...