Greatly outnumbered, Rath, Henning and Czerwinski use their wits to fight their foes. Svetlana is tracked down. Dr. Schmidt forces a truth to be seen.
Rath undertakes a dangerous mission to recover evidence of the secret German airfield based in Russia.
Rath and Bruno finally get a lead to the location of the missing film reel, but after the truth come the consequences.
As Berlin becomes increasingly politically charged, those in charge look to change the discourse on the May Day violence.
