Little Gluschevka is an unusual village, there is an anomalous zone where compasses break, water flows uphill and, according to legend, a priceless treasure is buried. In search of a solution to the local secrets, an adventurous geologist Tim comes to Gluschevka.

The film tells about the events of 1944 and about one operation of SMERSH, the special department of Soviet counterintelligence. The command suspects that an enemy is working in the liberated territory, who must get documents compromising the Soviet government (we are talking about secret negotiations with the Germans), left somewhere in the dungeon of Hitler's former headquarters.