Five scientists go into space to study a cosmic storm. However, the storm catches them by surprise. Upon their return to Earth, they find themselves transformed. Johnny Storm gains powers of fire and flight. His sister Sue can project force fields and become invisible. Reed Richards becomes a human elastic, able to stretch into any shape. Ben Grimm is turned to stone and acquires super strength. Finally, Victor von Doom gains a control of electricity that is slowly turning him to metal. Some embrace their new abilities and use them whenever possible. Others avoid public attention while they attempt to return themselves to normal. However, when one decides to use his new powers for evil, the other four have no choice but to band together and stop him. Based on the classic comic by Stan Lee.