No sooner had cop Sergei Loktev arrived on vacation in the south than he was hit on the head with a heavy object right in his room. And if his partner hadn’t helped, Seryoga would no longer look at the sun. But it soon became clear that someone seriously wanted to deal with him. It got to the point where they planted a corpse on him and accused him of murder. And then Seryoga decided, with the help of his partner, to find out who had a grudge against him. It turned out to be a local prosecutor. And all because Loktev unwittingly got involved in the affairs of the local mafia and prevented the theft of a diamond worth as much as two million dollars. This means that Loktev first needs to deal with the mafia, and then decide what to do with the diamond...