The game picks up directly where the movie ended, as the Underminer drills out of the ground and declares his intention to rule the world. The Incredibles prepare to battle him when Frozone arrives. Mr. Incredible orders his family to take care of the Underminer's minions while he and Frozone defeat him. The two reach the Underminer's machine, but he quickly escapes underground. Mr. Incredible and Frozone pursue him. The two discover a computer containing the Underminer's plans and learn that he has created the Magnomizer, intending to reverse the position of the earth's crust and fill the sky with extreme pollution to create an artificial underground.