Krypto has his first encounter with the Dog Stars as they try to capture an evil kitten named Snooky Wookums. Then, Streaky learns a lesson about being a superhero after he gets superpowers from Krypto.

Kevin learns what it's like to be a dog when aliens adopt him as their pet. Then, when dogs all over the city start acting like other animals, Krypto investigates and discovers that Mechanikat is the cause.

Streaky tries to be a big-time superhero to impress his nephew, Squeaky. Then, a movie star dog makes a pact with Snooky so that the actor can wear a super suit that gives him powers.

Streaky tells a tall tale to his fan club.

When Andrea learns that Krypto and Streaky are Superdog and Supercat, she battles with them against Mechanikat. Then Bat Hound joins Stretch-O-Mutt when Merton the Magic Rabbit captures Krypto.

When Mechanikat is rejected as a leader of a club over Glorg, he sets to capture Superdog once again with a very powerful suit of his own. When Krypto and Ace get a distress signal (from their space suits), they land on a planet with Kryptonite dust and soil. With Krypto's weakened powers, will he and Bat Hound defeat Mechanikat's new makeover?