4 people are exposed to cosmic rays after a space exploration mission, giving them superpowers. Reed Richards becomes Mr. Fantastic and has the ability to stretch his body. Ben Grimm becomes The Thing and his body is transformed into rock. Sue Storm becomes Invisible Girl and has the ability to create forcefields as well as becoming invisible. Her brother Johnny Storm becomes the Human Torch and can turn himself into a fireball and control fire. Together they become the Fantastic Four.