With a POP! and a puff of smoke, the Willows’ lawn mower calls it quits. A new mower will cost Mr. and Mrs. Willow a lot of money, money that Derek had hoped to borrow for a train ticket to visit a friend. Luckily, Derek and his brother and sisters find a rusty push mower tucked away in the shed. It doesn’t look like much, but it’s been soaking up magic for years. And now it’s hungry for grass!

Can Derek earn his ticket? Maybe… if he, Abner, Tate, and Celia can keep the magic mower under control!

Lynne Jonell follows up her Junior Library Guild Selection Hamster Magic with a second story of the Willow kids’ rowdy run-ins with mixed-up magic.