The harmless tramp Venchik Ajax literally caught his luck by the tail - he found and left the dog of the local construction magnate Busygin. He brought Benjamin closer to him, brought him into the house and into the family. As it turned out, unfortunately for both, Busygin’s wife Victoria was soon killed. Suspicion, of course, fell on the former homeless man. Detective Tatyana Ivanova, an old and good friend of Venchik, decided to save his good name...