Quick side note, terrible shows can't always just be justified with "it's a kids show". Kids deserve quality too.
The show focuses on short adventures from perspective of female superheros. That's pretty much it.
I don't mind that there is a female focus, what really bugs me though is that they are teenagers and their adventures are just average teenage girl things disguised with the superhero genre.
Like there is an episode about batgirl trying to get her liscense, I won't spoil it but think of the most unoriginal ending and the first one that comes to mind is pretty much what happens.
The people behind this obviously had no creative stories so they disguised their unoriginal material with superheros so kids won't get bored straight away.
The run time is short though so it won't make you suffer for too long but the short run time makes it more pointless to watch.
If you want to entertain your (very) young kids with just a simple then this isn't the worst option but it will become boring after a little while so I reccomend switiching over to something better