A group of criminals distracts Superboy by making him fight a thawed out Neanderthal. The use the distraction to steal an experimental invention. Fortunately, Superboy managed to defeat the caveman and stop the criminals.

A deep sea expedition discovers a huge pearl at the bottom of the ocean. When they are attacked by a sea monster they send out an S.O.S. Superboy and Krypto head to the ocean to rescue them, but discover that the sea creature is a dragon that was only attacking in order to protect the giant pearl which is really its egg. When the pearl is stolen by pirates, the sea creature gets angry. Superboy and Krypto capture the pirates and return the egg to the dragon.

Superboy and Krypto head underground to recover a radioactive rock that can only be found in the Earth's core. When the two discover a strange black sphere, they decide to take it back with them. Unfortunately, a strange crystalline creature follows them to the surface. When it emerges it because to wreak havoc. Eventually Superboy realizes that the black sphere is the crystalline creature's egg. They hatch the egg and take the baby to its mother. No longer angry, the mother returns to the Earth's core with her baby.

A wealthy old man promises to give a large amount of money to anyone who can make him laugh. Clark Kent and Krypto attempt to make him laugh but fail miserably. Later, however, Clark must reveal himself as Superboy to the old man in order to save an airplane that is about to crash. The old man begins to laugh because he thinks that the idea that Clark Kent wants him to believe that he is Superboy is hilarious.

A man arrives claiming to know that Superboy is really Clark Kent. The man claims to be from Krypton. He offers Superboy an antidote to Kryptonite. The man is really an alien from another planet who wants to trick Superboy into losing his powers. Superboy does not fall for the deception because he is suspicious of the man due to a scar on his body.

An enormous dragon-like creature crashes to Earth. Superboy and Krypto descover that it is an alien pet and that it is controlled by a remote control device. A group of criminals, however, overhear them and kidnap the alien. They use the creature to commit crimes. Eventually Superboy rescues the alien and stops the criminals.

A criminal plans to get Superboy by setting a trap with Kryptonite. Lana tries to help, but is kidnapped. Superboy and Krypto must figure out some way of rescuing her without falling victim to the criminal's Kryptonite.

A physicist develops a powerful energy device that unfortunately malfunction. Superboy and Krypto must rescue a scientist affected by the device and must stop the machine before it causes serious destruction.

Superboy and Krypto discover three refugees from the destroyed planet Verg. Sympathizing with them, Superboy tries to make their stay on Earth comfortable. Unfortunately three greedy and harassing diamond hunters make Superboy's job difficult.

When a returning astronaut turns out to be a powerful alien, Superboy and Krypto head off into space to investigate. They discover that the real astronaut has been kidnapped. Superboy is attacked by the aliens and imprisoned. The aliens plan to use him as a power source for an invasion of Earth. Krypto manages to rescue Superboy and the two of them put a stop to the aliens' plans.

When Professor Ames feeds a chemical experiment to an elephant, it turns into a rampaging mastodon. Superboy and Krypto recapture the animal so that the professor can cure it. Unfortunately, one of the professor's assistants does the experiment again. Superboy and Krypto must head to Africa in order to get newingredients for another cure.

An alien comes to Earth and causes bizarre and violent weather. When Superboy and Krypto finally stop him, the alien tells them that an invasion is coming. The alien then takes them to his homeworld. Under that planet's red sun, Superboy's powers weaken and he is taken prisoner and held under a transparent dome.

Superboy and Krypto find a stash of alien weapons. Krypto accidently blinds Superboy when he inadvertently triggers one of the devices. Krypto must act and Superboy's eyes until Superboy's sight is restored.

Superboy is freed from his prison when Krypto spills paint over the clear dome trapping Superboy. Superboy's powers return and he heads back to earth to defeat the invading aliens.

Three criminals plague Superboy in Smallville. Whenever Superboy tries to stop the villians, Krypto attacks him. Superboy learns that the criminals have a device that helps them control Krypto. Superboy discovers a way to stop the device by plugging Krypto's ears. Superboy and Krypto, then, work together to stop the criminals.

Superboy and Krypto capture two aliens who are using a number of devices to create chaos on Earth. When they investigate the aliens they discover a crashed flying saucer and two other unconscious adult aliens. They soon realize that the aliens they captured where the children of the unconscious aliens. The aliens crashed on Earth and the children have been using their toys to cause trouble. Superboy reunited the aliens and help them fix their crashed space ship.

Superboy and Krypto rescue a strange little creature that is shot to the surface by an underwater volcano. Superboy leaves Krypto to watch the creature as he goes off to figure out where it came from. Krypto tries to keep the creature out of trouble but has little success. Superboy eventually finds the creature's home. He returns to Krypto and the two of them take the creature back to his family in the volcano.

When a friend of Clark's finds a magical cape he is sent back in time to Camelot. Clark as Superboy goes back in time to help his friend. Superboy saves him from being trampled by the Black Knight, but is soon forced to duel the Black Knight who is being helped by Merlin. Superboy wins and the Black Knight and Merlin are arrested by King Arthur. Superboy and his friend return to the their own time.

When a flying saucer lands in the desert, the U.S. army prepares to destroy it. Superboy intervenes and asks them to wait. Superboy and Krypto head to the saucer. Upon seeing the powers of Superboy and Krypto, the aliens become convinced that all earthlings may have these powers. They decide to call off their invasion of the planet and head home.

Superboy and Krypto help out at a circus that is being plagued by a number of strange accidents. After a little investigating, they discover that the accidents are bing caused the a former business partner of the circus's current owner.