After saving a Killer Whale, Aquaman notices the water is on fire and radios Wonder Woman for help who then tells Superman. Meanwhile Aquaman, with the help of his Whale friend helps move a ship from the path of the flaming water. Superman arrives stops the flames with a concrete road and his super breath. The Super Friends find out that a group of Lava Men are the ones who are causing the trouble. Solderath, King of the Lava Men, wreaks havoc on the surface world because he feels the Lava Men have been living underground for too long while the humans occupy the surface. While the Wonder Woman fights the Lava Men, Superman stops a fire ball over the North Pole and Aquaman stops a giant whirlpool from draining the ocean. When the three Super Friends rejoin each other they defeat the Lava Men and return them back to the center of the Earth.