Searching for Jane Lowry in Budapest, Colonel Adeena Donovan and Section 20 discover she has ties to Magyar Ultra, a white-nationalist gang led by Rosa Varga and her volatile brother, Josef, and has enlisted the faction to kidnap a Russian chemical-weapons expert, Dr. Kareem Markov. Infiltrating the gang by posing as an MMA fighter, Mac is faced with tough choices to prevent his cover from being blown.