A finding of an old briefcase in a ruined house in 1970s leads to a treasure, hidden in the 1920s.

Pavel Tarlov acts as a reviewer for his friend, who is going to defend his dissertation. Having delved into the work, he discovers in it a number of beautiful assumptions that are not confirmed by practice, and refuses to evaluate. Vadim reproaches Pavel for cruelty and refuses to work with him on the same expedition...