Captain Alexey Cherkasov, who returned from the front, was appointed to the position of head of the criminal investigation department of one of the large regional centers. Recently, several daring crimes have been committed here: a branch of the State Bank was robbed, a meeting of thieves' authorities was shot, a government commission that came to check the plant was killed... The bandits are in control of the situation, they are cruel, decisive, smart and cold-blooded. It is possible that these are Abwehr agents who remained in the city for subversive work. It is unknown how long this war would have dragged on if Captain Cherkasov had not accidentally met a strange man who turned out to be a valuable witness...