Firestorm makes his debut as a superhero and is invited to join the Super Friends. Darkseid pursues Wonder Woman to be his and is able to capture her when Firestorm accidentally shuts off the Hall of Justice's force field.

With her free will removed, Wonder Woman leads the Super Friends into a trap after they arrive at Darkseid's palace to save her. Firestorm's duo persona allows him to free himself and the Super Friends from Darkseid's clutches.

Brainiac develops android duplicates of Superman and Wonder Woman in an attempt to seek revenge on the Superfriends. He enlists the reluctant help of Darkseid, who was tricked into following the android Wonder Woman right into Brainiac's star-ship. Darkseid and Brainiac hatch a plan to capture all the Superfriends...but, not long after their capture, it does not take long for the two egotistical villains to be at each other's throats. Darkseid and his gang whisk away with Wonder Woman through their stargate but it's Brainiac who indirectly has the last laugh on Darkseid.

Mirror Master traps Superman in the 6th dimension: the dimension behind mirrors. As he tries to warn him teammates through mirrors, he is too late as Batman & Robin are trapped as well. The Super Friends erroneously assume that they can only be trapped by mirrors and so Firestorm is caught by another highly reflective surface. The final Super Friend, Samurai uses invisibility to trick Mirror Master into thinking that he is caught. Samurai then grabs the portal device & releases his friends. Mirror Master is lost in a mirror maze & is caught.

Lex Luthor disrupts Darkseid's quiet time on Apokolips with a plan to destroy the Superfriends. One by one the Superfriends are lured into traps and zapped to Darkseid's palace. Luthor plans on stealing the powers from the Superfriends. In order to do this he needs the omega beams from Darkseid. Once Luthor has gained the powers of the Superfriends he quickly sets his sights on taking control of Darkseid's palace. The wily Darkseid, though, was prepared for a double-cross from Luthor. Suddenly, Luthor is powerless and the Superfriends are free...they regain their powers and they set out to stop Darkseid's latest plan. They thwart his plan but he escapes into his stargate. Afterward, Luthor is put in prison stripes.

Lex Luthor invents a shrinking ray and uses it on the Hall of Justice. The older members of the Justice League had earlier flown off to fight a mission in space...leaving behind the junior members like Robin, The Wonder Twins and Gleek, and Firestorm. Luthor succeeds in shrinking the Hall of Justice and it's up to the now miniature Superfriends to save the day before the senior members of the group return from space.

Lex Luthor uses a clumsy fan of the Superfriends to destroy them. The fan Sidney Wanamaker, a school mate of Firestorm's alter-ego, Ronald Raymond, creates his own secret identity...called Captain Mystery. He taps into the Hall of Justice files and shows up to help the Superfriends but winds up causing more harm than good. Luthor notices this and kidnaps Captain Mystery and intends on using him in his plot. It's up to the Superfriends to rescue Captain Mystery and capture Lex Luthor.

At an intergalactic auction, Darkseid and his crew set their eyes on gold kryptonite. It's the only chunk of gold kryptonite known to be in existence. Black Vulcan, Wonder Woman, and Firestorm infiltrate the auction under disguise as ice creatures. They plan on bidding high and taking the gold kryptonite before it can fall into enemy hands. Gold kryptonite is the form that strips away all of the powers that Superman enjoys on Earth.

Darkseid catches onto the trick and plots an elaborate scheme to expose Superman to the gold kryptonite that he won. El Dorado, Batman, and Superman travel to the Moon of Games to confront Kalibak about which star has Darkseid imprisoned Black Vulcan, Wonder Woman, and Firestorm. El Dorado hatches a plan with the help of Batman. Darkseid shows up unexpectedly, as El Dorado had feared, and Darkseid throws the gold kryptonite at Superman...but did it work?

Ronald Raymond, Apache Chief, Robin, and Wonder Woman get caught up in an island mystery when a science experiment goes awry after Batman and Professor Stein went missing when on their way to the Tokyo Science Expo with Professor Stein's Omnicaster. A scientist named Dr. Dan Corwin had walked into what is referred to as a Geneto Beam and is turned into a Dinosoid, which means half-human/half-dinosaur. His partner flees and hides in the jungle...it's up to the estranged scientist, as well as Ronald, Robin, and Apache Chief to track down the evil scientist and transform everyone back to normal.

The Wonder Twins accidentally expose Superman to Red Kryptonite which turns him into a 6 year old kid. Throughout the episode the Wonder Twins, Firestorm, and Samurai have to babysit the kid whom they have nick-named super brat. Mr. Mxyzptlk does not make things any better with his practical jokes and pranks.

Dollmaker, uses clay dolls and voodoo black magic to command the real Superfriends to commit crimes. A few of the Superfriends do not fall victim and must rescue the others from Dollmaker's spell. NOTE: Originally Toyman was to be the villain of the episode, but was replaced by the cartoon exclusive Dollmaker due to being off-limits.

Darkseid uses a royal princess from Tyron-7 to lure the Super Friends into a trap. He promised her that if she delivered the Super Friends that her planet would be spared from his wrath. However, as things are more apt to do, the plan does not necessarily follow that path and soon the princess learns that she was a pawn in Darkseid's ultimate plot: To banish Tyron-7 into the negative universe. A projector turns the Super Friends to stone and it's up to the princess and her father to free the Super Friends and stop Darkseid.

Brainiac uses his star ship and his mental powers to take control of a small village. He turns people into zombie-like creatures who he enslaves to mine and work for him. Brainiac eventually takes control of the Wonder Twins who set out to capture Wonder Woman. This succeeds but would later backfire when Apache Chief grows 50 feet tall and rattles the Starship, which causes the ice block {Zan} around Wonder Woman to crack. She's able to transform the Wonder Twins back to normal. Later on Apache Chief, the Wonder Twins, and Wonder Woman are on hand to stop Brainiac and save the village. NOTE: This episode is the final appearance of the Wonder Twins and Gleek.

Remlar, a villain from another galaxy, travels the universe in search of buildings and people to put on display in an intergalactic museum. Superman, Firestorm, and Samurai must figure out a way to stop Remlar and return the historical monuments and people to their rightful place.