Sasha, a gold medal graduate of the Ministry of Internal Affairs Academy, is sent to serve in the most problematic police station in Taganrog. The choice seems illogical, but Sasha knows: this is where his father, a "legend of the criminal investigation department" whom he has never seen, has worked for many years. However, instead of an exemplary hero in uniform, Sasha meets his complete opposite - Valera, nicknamed "Little One": a lazy, life-weary "guardian of the law" who only loves FC Rostov and taking bribes. His first day at work becomes a disaster: his father not only covers up for criminals, but is also mired in debt to a local authority. Now Sasha faces an almost impossible task: he needs to solve a complicated case and put the main local bandit in jail. But how can he do this if the only one who knows all the schemes is his own father, who has become the main obstacle in the investigation? Family squabbles against the backdrop of operational work, principles against corruption, and the main question: who will re-educate whom: the son of the father or the father of the son?