 Fuming over the departure of his wife Vivian and the cutting of his research funding, crazy nuclear scientist Rogers Henry constructs Medusa, a thermonuclear bomb capable of generating a continent-sized electro-magnetic pulse; such EMP could effectively destroy a computer-based society. He dupes Vivian into bringing it to the Pentagon to exact his final revenge on the government, rigging it so it will explode before its count-down if Vivian s pacemaker isn t within fifteen feet of it. Medusa arms itself in the air aboard Scott Nash s 737 cargo plane, and with Hurricane Sigrid about to hit the coast, nobody wants to let them land. Based on the novel by John J. Nance.