Kowalski's son Sven fled to Africa. He had taken justice into his own hands and killed his wife's murderer after the man escaped prosecution. Now he works as a doctor in a refugee camp in Kenya near the South Sudan border, battling smallpox, yellow fever, and snakebites.
Harry wants to visit his son. He travels to Kenya and gets caught in a new war. A mining company suspects there's uranium ore in the area where the refugee camp is located. They hire mercenaries to terrorize the camp's residents. But they encounter unexpected resistance organized by Harry Kowalski, the former Afghanistan combat veteran.