If you believe the classics, Paris is “a holiday that is always with you.” But for employees of the Parisian station of the Russian Foreign Intelligence Service, Paris is also a battlefield. Because behind the respectable façade of everyday Parisian life, an invisible intelligence struggle is in full swing, never stopping for a minute. Because in this secret war there are no truces, no holidays, no days off. And one of the most difficult tests for an intelligence officer has always been the suspicion that someone around him might turn out to be a “mole” - a traitor playing a double game... Having found out From one of his informants that there is a leak of information from the Russian embassy in France, SVR operative Oleg Ivanov receives an order to identify the alleged “mole”. He will have to act under severe time pressure, with only a few weak clues. He must organize an operational game and establish the truth at all costs. After all, even the most sophisticated and cautious agent has his own “Achilles heel”, his own weak spot, and by discovering it one can find the key to the recesses of his soul...