War On The 36Th Floor! Returning to the Baxter Building following the revelation that Sue is willingly staying with the SUB-MARINER Prince Namor, the downtrodden Fantastic Four soon find that they are not alone in the Baxter Building. Reed is attacked first by the Sandman who is hiding out in Reed's lab. Freeing the rest of the FF who were trapped in an elevator, they begin searching out the rest of their headquarters for the other members of the Frightful Four.
The Sandman reunites with the Wizard and Trapster and they begin their hunt for each of the members of the Fantastic Four. The Trapster finds the Human Torch first and manages to immobilize him with his super-paste. The Wizard tracks down both Reed and Medusa and is able to defeat them by placing anti-gravity discs on their backs. Finally, the Thing is attacked by the Sandman, however he avoids defeat when their fight is interrupted by Thundra, who has come to make good her previous warning to her former teammates in the Frightful Four about attacking the Fantastic Four ever again.
Meanwhile, Johnny manages to break free of the Trapster's paste-trap and easily defeats his old foe. He then finds the Wizard and uses the Trapster's paste gun to immobilize him. Freeing Reed and Medusa, the FF reunite and contain the villains they have defeated. When Reed asks Thundra how she knew they were in trouble, the possible answer is interrupted when they all become aware that Namor has risen sea monsters from the sea and intends to renew his aggressions towards the surface world.
