After saving New York from an alien invasion, billionaire Tony Stark buries himself deeper into his work by building a ton of new and improved Iron Man suits. He also starts having constant nightmares and doesn't know why. But deep in the shadows, a new menace called the Mandarin starts orchestrating a series of terrorist attacks all over the world. When his home is demolished and his suits are destroyed, Stark begins a personal journey to finding out the truth about the bombings and tracking down whoever is truly responsible. Little does Stark know however is that someone else from his past has his own plans against him and proves to be even more powerful than Stark realizes.