It's Pet Day at Super Hero High and DC Heroes such as Wonder Woman, Harley Quinn, The Flash and Batgirl have brought along some of the bravest animals they know to compete in the competition. But when some of the Super Pets start to mysteriously disappear, the heroes will have to enlist the help of the Teen Titans shape-shifting hero, Beast Boy - to locate their missing animal friends.

When Big Barda reluctantly joins the Roller Derby team, the bout against the Furies threatens to demolish Metropolis.