Professional killer Svetlana Demyanova goes to Kaliningrad to piece by piece reconstruct the events of seven years ago. Then she was ordered to eliminate Colonel Nazarov, a “mole” from the Foreign Intelligence Service, but she failed to cope with the task - Nazarov managed to escape. They almost forgot about Svetlana’s “shame”, and they tried not to remember Nazarov, until one fine day it turned out that the traitor-colonel, when escaping, took with him top-secret documents from a closed archive. But he couldn’t take the papers abroad, but hid them somewhere in the city. Svetlana's task is to find a cache of documents, and she has only six days to do this...