Publisher Annotation: Pat and Jen do everything together, including saving the day! But when Jen and Evil Jen find out they have one chance to find their long-lost mother in the Overworld, Jen's going to take it-even if it means that Pat can't join her on an adventure for the first time ever. With Mr. Rainbow's help travelling to the Overworld should be the easiest part, but when something goes wrong, Jen and Evil Jen wind up trapped in the nether....