A just man becomes an outlaw. He is pursued by the police over the years, while he tries to fight the injustice in the world, but he can't figure out the minds of his fellow men, and is often misunderstood.
The story revolves around two young schoolboy pioneers, Petya Vasechkin and Vasya Petrov, as they navigate their attempts at self-discovery and their shared affection for their friend, Masha Startseva.
After WWII is over, a young officer Volodya Sharapov returns to Moscow to work in MUR - Moskovskiy Ugolovny Rozysk (Moscow Criminal Police). There he meets Gleb Zheglov who is a chief of a squad which fights organized crime. Their main task is to track down a gang "Chernaya Koshka" (Black Cat) which terrorizes the city. Also, they have to find out who murdered Larisa Gruzdeva. Zheglov believes it was her husband Ivan Gruzdev, but Sharapov has his doubts about it...
A new Soviet life is emerging in a new Moscow microdistrict. New people, new families, new neighbors. The elevator is not yet working, or is no longer working due to constant overload due to transporting furniture. Neighbors are just getting to know each other, getting to know each other, and gradually the lives of different families imperceptibly begin to intersect.
The series tells about how police officers, investigating the case of robberies and murders in hotels, managed not only to neutralize, but also to expose major plunderers of socialist property.