The Super Friends must stop the plans of a conqueror named Torhana who seeks vengeance on the people of the surface world by freezing everything in his path. Torhana and his crew travel by ship, freezing oceans and continents and people... Aquaman uses his telepathy to summon sword-fish to cut him out of the ice and take him to Atlantis. Torhana and his crew appear to have the upper hand but by episode's end the Super Friends regroup and come up with a clever plan to melt all of the ice that's engulfed the planet. This is one of the few episodes in the series that features Aquaman at his usual base of operations in the comic books: the undersea city of Atlantis.

While in space, Batman and Superman become possessed by brain creatures. The brain creatures ultimately take over the minds of Wonder Woman, Robin, and Aquaman when it appears that the Wonder Twins are successfully defeating Batman and Superman's asteroid attack of Earth. Batman and Superman, while under mind control, continue to attack Earth by firing huge asteroids at the surface. Superman uses his speed to hurl multiple asteroids at Earth's surface, which causes fissures, fires and floods. Wonder Woman uses her mental powers to overcome the mind control and with the help of a magnetic cloud the brain creatures are expelled from the brains of Wonder Woman, Aquaman, Robin, Batman, and Superman. Wonder Woman then devises a plan to send an electric current throughout Earth and trap the brain creatures, after which Superman uses a laser gun and sends the brain creatures many light years away from Earth.