When a dead body riddled with smallpox is found in the Golan Heights, Mossad chief Gideon Karlski contacts former CIA agent and now Deputy Secretary of Defense Jeremiah Adams. Tthe few available clues point to the twisted master of Iran's clandestine activities, Morteza Dehesh. In exchange for his help to convince Washington to aid Israel, Adams demands to join a covert mission and neutralize Dehesh personally. Reluctantly, Mossad allows him to join a team going to Iran. Meanwhile, the countdown on Dehesh's plans to annihilate Israel using nuclear weapons is rapidly running down.