In 1860, Killian Kilkenny, a twenty-eight year old man, is trapping beaver in New Mexico. He encounters a Navajo Indian, who, in reality, is an alien. They fight and both shed blood. Killian is badly wounded, but kills the Indian, whose bluish blood flows into Killian’s eyes and mouth. Suddenly, the alien Indian bursts on fire, and then there’s a bright flash of blue light followed by a blue-white ribbon of smoke, which rises into the sky. The body of the alien Indian disappears. Killian becomes ill, from the contact with the blueish blood. He passes out. Hours later when he awakes, he is a soldier in the Army’s 1st Cavalry. He has no idea how this has happened. Over the next few weeks, he’s bewildered to learn, he has become an alien chameleon, who is able to transform into any human form, and is practically immortal. During warfare he learns he can’t be killed by gunfire, swords, knives or any other devices, as his wounds began to self-heal, in a matter of minutes.
Later, from an Indian medicine man, Killian learns he’d become an alien Blue, who could only be killed by fire. For the next one hundred years as soldier, he fights in many wars for his country, and against his one main nemesis, Lupan, a Navajo Indian, who is an evil Blue Warrior.
Lupan and the other Blue Warriors hate the white for what they have done to their people, and seek to kill them. Killian and Lupan become arch enemies and are intent on setting one another on fire, thus sending their foe to his death.