After returning from Latveria, Reed and Sue seek out a peaceful residence in which to begin to raise the baby. Strange things begin to occur when they choose a mysterious but tranquil house in the country...
Believing it will be safer for an infant away from the Baxter Building, the Fantastic Four take a trip upstate to deliver their new son (who's name is revealed, finally) to Agatha Harkness. When they arrive, a storm kicks up and they stay the night. Then, the Frightful Four come out to play.
While on an outing, the Fantastic Four investigate multiple attacks on ships from a man shaped monster. As the team begins to search caves beneath the waves, their guide destroys the ship and leaves them stranded without oxygen.
The Maggia attempt to dispose of the Fantastic Four so they can take all of Reed's inventions. After being dumped in the harbor and encased in coffins, can the super hero team survive and mount a counter attack on the Baxter Building?
Namor discovers Magneto and saves him from a winged reptile before returning with the mutant to Atlantis. As the Fantastic Four come under siege, they trace magnet waves to the Realm Eternal. When an attack goes too far, Ben fires a missile towards the undersea kingdom, creating a chain reaction that could result in war.