Four young schoolgirls find out what corporal punishment, in a private institution is really like. They are all strapped relpeatedly, with four different straps, from the bare bottom to fully nude. They learn very quickly how embarrassing a spanking can be made with lots of cornertime and humiliating. They are to show their breasts, bottoms, and vaginas as part of their punishment. It does not end until each and every bottom is black and blue.