After a space mission exposes them to cosmic rays, Reed Richards, Sue Storm, Johnny Storm, and Ben Grimm develop extraordinary powers and become the Fantastic Four. Together, Mister Fantastic, Invisible Woman, Human Torch, and the Thing face threats from outer space as well as enemies seeking to dominate Earth. Their early adventures introduce major figures such as Doctor Doom, Galactus, the Silver Surfer, the Skrulls, and the Inhumans. But beyond the battles and scientific discoveries, the team is above all a family whose bonds, arguments, and sacrifices shape every mission. This era lays the foundations of Marvel’s cosmic universe and defines the identity of the Fantastic Four.