In Season 4 of ... 'The Bureau, ' Malotru ... is hiding out in Moscow while being relentlessly pursued by the CIA and DGSE (France's Directorate-General for External Security). In order to survive he explores a collaboration with the Russian secret service. Back in Paris, the 'Bureau of Legends, ' the most confidential branch of the DGSE, is in the crosshairs of JJA ... the new Director of Internal Security within the DGSE. JJA feels very strongly that The Bureau is due for a big shake-up: believing it had been under Malotru's influence for far too long. The Bureau nevertheless goes ahead and launches two large-scale operations: one to infiltrate Russian hackers in Moscow, the other to track French jihadists across the Middle East. Both missions push the Bureau agents to their limit, and up against the unavoidable shadow of Malotru.