

An experimental serum called Extremis gets stolen, and Iron Man rockets into action. The ensuing battles test Stark's spirit and Iron Man's power.

A new era dawns for Tony Stark, aka Iron Man, redefining the armored Avenger's world for the 21st century! What is Extremis, who has unleashed it, and what does its emergence portend for the world?
Aired: 11/30/2010
Someone close to Tony Stark is responsible for the greatest threat to the world, an abomination of technology that has been unleashed on the world. What's worse -- it is more powerful than even Iron Man can handle!
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