This is the story of a provincial police officer named Sanya, nicknamed Balabol. He earned this nickname for his sense of humor and ability to keep his spirits up even in the most difficult situations. Sanya Balabin is convinced that he can handle anything. However, he often finds himself in a hopeless situation and has to turn to his friends for help. Now, a newcomer has appeared in Sanya's department - Lieutenant Chekashin. He immediately became the new "victim" of the main character's jokes and wit.