In Pine Ridge national park, ranger Ron Sparks finds the skeleton of a man. By order of the FBI Quincy and Sam examine the human remains and identify them as the corpse of Frederic Gates. The man is known to the police. He hijacked an airplane five years ago and blackmailed with a gun which contained anthrax bacteria as an 'ammunition', 500,000 dollars. Sparks has found a part of the booty nearby the skeleton and, besides, has been infected with anthrax. He spreads an epidemic. To stop it, all people who came and touch the money must be found. An affair which requires the highest haste and care.