The last Dom, apparently a leader and with immense mental powers, is discovered hiding in a command bunker. The Dom has anticipated military defeat and, before Feric has the pleasure of killing him, triumphantly reveals that the Doms had salvaged and rearmed one of the ancient nuclear weapons. It is a doomsday weapon, and he triggers the failsafe. After Feric and his cohorts have evacuated Bora, a cobalt bomb detonates, and as the Dom planned, its fallout utterly corrupts the gene pool of Heldon. If any of its citizens, including Feric, reproduce, they will produce the mutants that they had previously sought to obliterate.