(The plot is thought up on the basis of the facts stated by the historian N. Eidelman giving a course of lectures to students of the High director's courses).

The metal suitcase with foreign inscriptions in a random way falls into hands of journalists. In it there are separated, numbered skeleton bones, and also an ancient varnish miniature with Pyotr's portrait 1. Whose is a skeleton, which length - more than two meters?

Search of truth brings journalists to the old woman, whose father was close familiar with the first Soviet commandant of the Peter and Paul Fortress, and her story transfers us to the first postrevolutionary years...

In the city museum miracles began to occur: from cloths of the well-known artists details and characters started vanishing. Venediktov and Masha are involved in investigation which comes to an end with an unusual opening day.