In the summer of 1955, the Cold War heats up in Helsinki. Both the Soviet Union that the United States accelerate intelligence activities, as both are afraid Finland sliding into enemy's side in the face of presidential elections. The CIA supports Fagerholm, KGB supports Kekkonen, but who would take Finland's side?

While the U.S. embassy investigates the strange death of its CIA agent and receives surprising assistance from Washington, Nyrkki decides to strike directly at the Porkkala military base, closely guarded by the Red Army.

Julius is beaten and trapped, but Helena reconciles her sins with Sergejev’s gifts. Operation Baba Yaga kicks off at Christmas when Yrjö surprises Helena and Julius with his Christmas present.