Fantastic Four By Waid & Wieringo: Rising Storm

The Wizard is determined to destroy the Fantastic Four permanently, and has a contingency ready for when his deadlier-than-ever Frightful Four fall short. When a fleet of alien ships miles high cuts Manhattan off from the rest of the world, a city that had turned on the Fantastic Four has no choice but to ask the only heroes present for help. One member of the team then makes a decision that changes the group permanently. The volume also asks whether the universe is prepared for Johnny Storm as a herald of Galactus, and whether the Human Torch can be the same person after tasting the Power Cosmic. Collects Fantastic Four (1998) #514-524.