Superman and Wonder Woman are abducted by a race of alien beings and are forced to play intergalactic football which is referred to as space ball in this episode. By the end of the episode the heroes teach the aliens that the key to success is to work together.

The Wonder Twins and Gleek are on weekend patrol duty when the Justice League patrol craft is invaded by space racing punks. After the Wonder Twins decide to teach them to respect the law, the space racing punks decide to retreat by dematerializing. Unfortunately, they take Jayna along with them and hold her hostage. At the Hall of Justice, Wonder Woman and The Flash notice there are three spacecrafts violating lightspeed in the Saturn sector and decide to check it out. When they arrive they see the space punks have hit a space mining ship. Wonder Woman and The Flash save the two space miners and The Wonder Twins saves the out of control Space Ship.

Giant children arrive on earth to play.

Bizarro creates trouble by zapping several of the Superfriends into an arcade game reminiscent of Pac-Man and Bizarro is in control of the hungry muncher.

Space shuttle astronauts unwittingly load an alien chemical blob into their cargo bay (assuming it to be space junk). The blob starts eating metal and the astronauts call for help. Batman, Robin and Back Vulcan zip out there and rescue the astronauts. Assuming the blob burned up in the atmosphere, they return to earth, but then the blob reappears and after some failed attempts, they figure out the creature has a problem with sugar.

While investigating a strange electrified spiked metal pod, Superman and Batman unwittingly unleash the cloud-like prisinor inside, (named sleep) and are then trapped in a dream world. They have nightmares. Superman dreams that everything he touches turns to kryptonite. Wonder woman tries to save them by wrapping her golden lasso around her waist and entering the dream world. She instructs a minor to wake her in five minutes by tugging on the lasso. It works. Superman then breathes the creature into his lungs and blows him back into the pod.

After obtaining living cells from Aquaman and El Dorado's skin, Brainiac creates clones of the two heroes. Brainiac programs the Aquaman and El Dorado clones to their counterparts bring them back to Brainiac's Laboratory. After attempting to rob a ship, the clones are apprehended. The next day in court the clones say the Super Friends have turned against the people. The real El Dorado and Aquaman tricks Brainiac to free them and the hero transport to the Metropolis courthouse. There they clear up the situation and incarcerate Brainiac.

The three Phantom Zone villains are freed by an alien who doesn't realise they are criminals. In this episode they force the alien to travel back in time with them in an attempt to alter Superboy's life...hoping that he will never grow up to become Superman. Meanwhile, in the future, Superman and Green Lantern learn of the plot from the alien and travel back in time to save Superman's own past and capture the Phantom Zone villains.

The Hall of Justice, with Wonder Woman and Samurai inside, gets swallowed up into the Earth. After tumbling through layers of rock, the Hall of Justices comes to a stop at a strange forgotten world beneath our own. When Wonder Woman and Samurai explore the strange subterranean world, they are attacked by pre-historic creatures called Slarums. Technos saves the two Super Friends and offers to show them the world of the Volti. During the tour Technos gets mad because the two Super Friends asked him why the Volti have not helped the Slarums and as a result, Technos imprisons them. Wonder Woman and Samurai escape and head over to the Hall of Justice to contact the other Super Friends only to be met by Slarums. Wonder Woman, Samurai, and the Slarums decide to pay the Volti a visit to unite the two races and lift the Hall of Justice back to the surface.

Batman & Robin foils some building constructors' plans to revive the Hall of Doom, which was destroyed in a previous encounter with the Super Friends, and turn it into a Museum. When Batman figures something is wrong, the building constructors reveal themselves to be Lex Luthor, Soloman Grundy, Sinestro and the rest of the Legion of Doom. The Legion of Doom proceed with their salvage operation, restoring the Hall of Doom to its initial deadly condition. When the Legion of Doom attacks Metropolis, Superman and Wonder Woman attempt to stop them only to get crystallized by Lex Luthor's Crystallization Ray. With the Super Friends defeated, the Legion of Doom take over the Hall of Justice to make their demands. Meanwhile Superman and Wonder Woman are able to move again thanks to Superman's X-Ray vision and are off to stop the Legion of Doom. Batman & Robin must find a way to reverse the polarity of Luthor's Crystallization Ray to transform Superman and Wonder Woman back to normal so the Legion of Doom's raid on Fort Knox can be put to an end.

Two divers find the Titanic which contains "Thinking algae". Then the Titanic comes alive.