What to do if you find out that someone is preparing a crime? Of course, inform the police and stop the villain! But what if your new acquaintance is not a villain at all, but a talented inventor who was once betrayed by his best friend? Now Stas wants to bring this “friend”, businessman Khorkov, to light and expose his shady dealings... Brother-detectives Dimka and Alyoshka decided to help the inventor! Even if for this you will have to commit several not entirely legal actions... Evil must be punished, and justice must be restored!