At Ralph's lab, Ralph shows off the various inventions he has created that operate off Cobalt power. He takes Ralph aside to show him his latest invention as well: A suit of Cobalt Powered armor that he hopes will rival that of Iron Man. Putting on the suit at Ted's insistence, the combination of his previous head injury and the Cobalt power of the armor causes Ralph to go crazy and he recklessly shows off his powers. When Ted mentions Iron Man, Ralph (calling himself Cobalt Man) snaps and strikes Ted down and then begins destroying his lab.
Alerted by the noise, Scott and Jean change into Cyclops and Marvel Girl and attempt to stop Cobalt Man's rampage. Although the two put up a good fight, they are buried under rubble when Cobalt Man attempts to bring the roof down on them, allowing Cobalt Man to escape and attack the Stark Industries plant. Saved by Jean's telekinetic powers, Cyclops calls for help, prompting the Professor (still working in his lab) to summon the other X-Men to Cyclops and Marvel Girl's aid. Bobby, Hank, and Warren all have to make excuses to leave their female company. While Zelda and Vera are less than impressed, Warren and Candy part on good terms with Warren promising to call her the next day.

Back at Ralph's plant, Scott and Jean free themselves, ducking out of site when the revived Ted hops into his brother’s van to rush off and try and stop him from destroying Stark's plant. As Ted races off unknowingly leading Cyclops and Marvel Girl along the way, Warren picks up Bobby and Hank and they arrive at the Stark plant first. With Iron Man away on other business, the plant is defenseless against Cobalt Man until Angel, Iceman and Beast arrive to stop his attack. Despite their best efforts, Cobalt Man manages to give the three X-Men the slip.

As Cobalt Man continues his attack, Ted, Cyclops and Marvel Girl arrive on the scene. Cyclops quickly comes up with a strategy to stop Cobalt Man. Realizing their foes chest plate must be the source of his power, Cyclops has Iceman trap Cobalt Man in a chunk of ice long enough for Cyclops to blast the chest plate. Unaware that his powers have been disabled, Cobalt Man attempts to fly away but instead falls into a nearby lake to be recovered by Angel. Removing Cobalt Man's helmet, all gathered are relieved to find that Ralph's sanity has been returned to normal. Ralph realizes that some sources are too powerful for man to handle. In the aftermath of the battle, Ted thanks the X-Men for their help and hints that he may have figured out that Marvel Girl is really Jean Grey.

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