Collects Fantastic Four (1961) #142-150, Giant-Size Fantastic Four #2, Avengers (1963) #127 and material from Giant-Size Super-Stars #1.
Dr. Doom pushes the FF to the limit! Then, Human Torch and Medusa adventure in the Himalayas! Reed and Sue's relationship is strained when Sue joins Namor in an invasion of New York - and just to keep things tense, the Frightful Four pile on, too! Then, Ultron crashes Crystal and Quicksilver's wedding! Finally, it's a Thing vs. Hulk battle royale and a tense time-traveling tale!