In Malibu California, Tony Stark has insomnia and over 72 hours he develops the new prototype MK42 of the Iron Man armature. He also recalls events in 1999, in Bern, Switzerland, when he had one night stand with the genetic scientist Maya Hansen that was researching a regenerative process and made fun of his fan Aldrich Killian on the New Year eve. There are explosions in Los Angeles and the terrorist Mandarin assumes the attempts broadcasting through television. When Tony's bodyguard and friend Happy Hogan is seriously wounded in an explosion, Tony Stark challenges Mandarin and gives his address to him. However, three helicopters attack his mansion and he loses everything but his prototype, and he awakes in the Tennessee. Tony tries to make work the defective prototype and soon he discovers that the event from 1999 is connected to the present terrorist attacks.