Johnny is out club-hopping when he notices a woman who appears to be in danger. Trying to help, he chases after her — only to be overwhelmed and severely beaten by her pursuers.

The woman rescues Johnny and brings him back to the Baxter Building, where she uses highly advanced technology to heal his injuries. She reveals she is from Attilan, a secluded but monotonous hidden city that she longs to escape from.

Before the team can learn more, the woman is recaptured and taken back to Attilan. When the Fantastic Four follow to try and help her, they quickly discover that the situation is far more complicated — and far more dangerous — than they expected.