Ultimatum has hit the planet hard and the Baxter Building was ground zero. Johnny is still missing. Dr. Storm is dead. And Reed has taken off to parts unknown. Sue's life hangs in the balance and rests in the hands of untested pilot Ben Grimm, a.k.a. The Thing, and Dr. Arthur Molekevic, now better known as the megalamonical Mole Man. "Journey to the Center of an Invisible Woman" begins!
This story is loosely based on the 1966 science-fiction film, Fantastic Voyage, where a submarine is shrunk and sent inside of a badly wounded scientist, in order to repair his wounds and save his life.
— Description from Comic Vine community (comicvine.gamespot.com).
