Crime doesn`t stop while the superheroes are on vacation! When Superman takes some time off for a holiday, his pet dog Krypto forms the League of Super-Pets to defend the innocent people against unjust crime. As the pets of Superman`s fellow superheroes, they`ve been waiting patiently for their turn in the spotlight. Witness the adventures of crime-fighting critters Krypto the Super-Dog, Streaky the Super-Cat and Ace the Bat-Hound, and the rest of their fighting friends!