"Harley Quinn loves fighting crime with her classmates like Wonder Woman, Batgirl, and Supergirl, but she always does it her with own madcap style--and a big mallet! It's no surprise that Harley can't resist getting involved with an upcoming inter-school battle of the bands and a fantastic cosmic carnival that appears only once a year--and this year, it's coming to Earth! But as things get stranger, Harley knows how to get to the bottom of a mystery--and...

After flunking sixth-grade English, basketball prodigy Stanford Wong must struggle to pass his summer-school class, keep his failure a secret from his friends, and satisfy his academically demanding father.

An elite group of underdogs trained to fight crime must save their unique school from shutting down.

Recruited to Super Hero High by Supergirl, intelligent Barbara Gordon trains for her new role as Batgirl alongside some of the most powerful teenagers in the galaxy.