Erin O'Day has escaped in her black-and-silver Dodge Daytona, despite hastily-organized roadblocks and an all-points bulletin. Now all of Forte is together, and they decide that the most prudent course of action is to head for the Nebraska coordinates in the Silver Bullet, leaving it up to UNCLE and the police to find O'Day.

On the way, Knightsabre wonders if the way she's been feeling lately means that she's pregnant - and if so, which of her forms is going to bear the child?

Jack, meantime, is finding it ever harder to change to Dr. Jackal.

The heroes arrive soon enough at Mount Immortus, an 1100-foot volcano just two hundred miles from Lincoln. While UNCLE agents cover the Lincoln and Omaha airports, our heroes land right near the base of the mountain, near the "Ski Nebraska" gift stand.

Forte tries to get some info out of the old lady behind the counter, but doesn't have much success. She's a mite curious about these folks - Nebraska is over 96% white, three percent black and has virtually no other minorities, let alone big furry guys or Hispanic women or men in spandex.

Using his thermal vision, Vanguard spots an exhaust port at the base of the mountain. Evidently there is a geothermal energy plant somewhere inside. The heroes think it unlikely it's to power the ski area.

The ski area, Stampede Mountain, is closed for the season, although repairs and cleaning have started in preparation for the first snows. The heroes decide that if there is a vast army down below, the easiest way to get them inside would be to smuggle them in as skiers. So they begin searching the buildings one-by-one.

All looks normal until electrified whips spring out of the ceiling of the ski rental shop and attack Cincoflex. She escapes out the door, and then the heroes break in to the basement level to find a hidden pneumatic elevator. They manage to get it going down the shaft and several minutes later get to the bottom.

The door in the shaft opens and the heroes are blinded by the sudden glare of arc lights. A squad of soldiers armed with electron rifles ambushes the blinded heroes, shooting them up pretty bad until Dr. Jackal does a blind blitz on the soldiers while Vanguard and Shrike try best-guess pot shots.

Now that the welcoming committee has been dispatched, Forte hurries down long, ice-blue corridors, wondering when the next bunch of trigger-happy troops are going to jump out and attack. But every room along the corridor seems to have been hastily evacuated. Most of the rooms are laboratories filled with the latest scientific equipment. One room in particular seems to be a genetics research lab, and another seems to be devoted to building...kitchen appliances?

Perhaps the strangest room of all contains a large, intricate machine that has a barrel pointing at a softly-glowing green rock. Not knowing exactly what this thing will do, Knigntsabre decides to break it so whatever it does do it won't.

More rooms open to the corridors, each containing various workbenches and desktop computers that would not look out of place in the development sections of General Electric or Rockwell International. Finally they reach what appears to be a domed auditorium. And on the dais are Erin O'Day, her pet monkey Jack, and a smiling Professor Ravenscroft!

The heroes are in the middle of the auditorium, which evidently was carved out of the rock. The floor resembles smooth dark glass, with a large area of the floor doubling as a video screen. An outline of the United States is right under the heroes' feet. On one end of the room is the dais; the other end is filled with seated technicians, scientists, and guards.

Ravenscroft congratulates the heroes for making it this far; too bad it doesn't matter anymore.

The prof reveals that he is the leader of the Executors conspiracy. Over the past several years the Executors had been funneling monies and manpower from the forty-five international firms who ran the clandestine Corporation. This ski area had been designed as a fully-operating cover for the activity below.

Knowing full well that the nation's heroes would be every bit as much a threat as the armed forces, the Executors began searching for a way to eliminate them through guile rather than direct confrontation. Although the conspiracy's scientists have not yet discovered a genetic factor that they could exploit, they have been able to create an analogue to kryptonite that also radiates on the psionic level.

Using the full economic power of the Corporation, the Executors have incorporated this analogue, in minute amounts, in everything from auto parts to appliances, baby carriages to cars, books to building materials. It's too late to stop it now, it's in virtually every home in America, and in a great many other countries as well. The analogue is not in sufficient concentrations to kill Superman or his offspring, or to destroy the minds of a mentalist. But there is enough so that these heroes grow slightly weaker with each passing day, until they are no longer a threat to the Millennium Executors. Of course, the plan still has over a decade to run.

The thousands of troops that Vanguard and Jackal found in the computers are simply waiting until the millennium to join, says Ravenscroft. He says that this is no racist or political struggle, but an economic one. He plans to give America back to the corporations and businessmen who made it great. America is falling behind other countries because the present government is too concerned with social issues and not concerned enough with driving the economy.

After several minutes of rationalizations the heroes have had enough. They move to attack, but there is a force wall cutting off the villains from the heroes. The surrounding auditorium goes dark, except for the part where Forte is. Four men in red, white and blue armor enter. Ravenscroft brags that the circuitry is based on Iron Man's armor - and that he stole the info from the Black Wasp's mind when he had captured her a few months back. Soon he will have an entire army of these Minutemen to back up his words with force!

Jack, Erin’s pet monkey, reveals that the small gibbon’s body contains the mental essence of General Immortus! Soon, with his mind-transfer machine, he'll have a more suitable body - one of the heroes would do nicely, Knightsabre says, "Oh, you mean the thing we trashed on the way in?”, sending the Immortal Monkey into a rage. He mind-controls Knightsabre into attacking the heroes (hey? it worked once…) and the Minutemen leap to attack.

Dr. Jackal once more gets to trade punches with Knightsabre ("Love Connection" was never like this!), who keeps him too busy to go after the Minutemen.

The Minuteman armor packs a deadly punch, and the four elite agents have been trained in using the BiOcular Targeting Sight (BOTS) for maximum efficiency. The photon grenade launchers and Kryptonite Analogue Particle-beam weapons (KAP guns) pack enormous firepower, the polarized armor can take a lot of punishment. But the heroes' great advantage is their speed.

Vanguard can only get off a few good shots before he's downed. Cincoflex and Shrike manage to take care of a Minuteman apiece before they get clobbered, too. Dr. Jackal finally puts Knightsabre out for the count, but then finds he's facing two of the Executors' elite.

Luckily, the two remaining Minutemen had been hammered before by Vanguard, Shrike and Cincoflex. They fire on Jackal again and again, and keep missing. Jack runs through them, then turns toward Ravenscroft.

The whole place explodes into pandemonium. The techs and guards bolt for the exits, and Jackal leaps for the smug professor. Ravenscroft is holding a small box that looks like the remote control to a Zenith, and threatens to push the button unless Jackal backs off. But Jack leans toward Ravenscrcft, and the prof pushes his button - and almost instantly there comes a deep growl from the bowels of the earth as the entire Executors’ base trembles violently.

Jack grabs Ravenscroft and Erin O'Day as the monkey Immortus panics and runs back into the flames to save his precious machine, the one chance he has of being human again. Knightsabre and Shrike wake up in time to fly Cinco, Vanguard, Jackal, Ravenscroft and Erin up the elevator shaft, as boiling lava shoots up the shaft behind them.

The entire mountain is shaking the base to rubble, which is incinerated in the jets of molten rock that rush up from below. Our heroes fly right through the roof of the ski shop, which is instantly engulfed in flames as the searing heat reaches it. Stampede Mountain burns as the small crater lake boils away.

When the heroes and their captives are safe on the ground some distance away, they make an effort to divert the lava flows from surrounding fields by digging or blasting trenches. Then they stand back and watch as Mount Immortus belches fire into the evening sky.