The Chief Test Pilot of Slaton Air Base is killed and reconstructed in a staged car crash by Captain Black, but when two medical doctors pass by, they revive the test-pilots' original body, named Major Gravener.
Following this miracle, the Mysteron Major Gravener attempts to leave Slaton Air Base in a fighter jet armed with a live nuclear warhead, but is stopped in time when the base office is contacted by the hospital who revived the real Gravener.
With Spectrum investigating the Mysterons' latest threat concerning the annihilation of the world capital, Futura City, they are alerted about the bewildering incident and use the real Gravener in a risky operation as the bait to discover if the Mysteron's will fall for the Major Gravener, and spring a net on the wanted Captain Black, even when the Mysteron doppelganger is already dead.!