Abby and Jonah take a trip through the magic mirror and finally end up in Jack and the beanstalk (which happens to be Jonah's favorite story ever)--but things soon start to go wrong, and the children have to try and set the tale right, even if it means trading their dog, Prince, for the magic beans, climbing the beanstalk (three times!), and reaching an amicable settlement with the giants (Magnus and Philippa, who are really quite nice), and the sneaky trader, Devin, to get their dog back.

Sarah Mlynowski is the New York Times bestselling author of the Whatever After series, the Magic in Manhattan series, Best Wishes, Gimme a Call, and a bunch of other books for teens and tweens, including the Upside-Down Magic series, which she cowrites with Lauren Myracle and Emily Jenkins and which was adapted into a movie for the Disney Channel. Originally from Montreal, Sarah now lives in Los Angeles with her family. Visit Sarah online at sarahm.com and find her on Instagram, Facebook, and X at @sarahmlynowski.