George and Harold have really done it this time...they've created a monster! She's faster, smarter and more evil than anything the world has seen before: she's Wedgie Woman!
With the help of her horrible robots and her horrendous hairdo, Wedgie Woman is on a mission to take over the world; and she'll give a whopping wedgie to anyone who stands in her way-including Captain Underpants!
Will Wedgie Woman's wicked ways spell the end for our heroes? You'll have to read the book to find out.