The adventures of the Moscow auditor, who came from our time in 1971, continue. Pavel Ivlev begins to study at Moscow State University. His sister and girlfriend study at the Mining Institute, but not everything is smooth. September, potatoes, new and old friends. The ambitious Komsomol of the Satchan mechanical plant also returns to Moscow, from which he was once sent to the province for wrongdoing. How will their relationship develop now?