"It's Easter! The eggs are decorated, the baskets are ready, and...it's time for the annual Twist Easter Egg Hunt, Ada's favorite family tradition. And this year, her parents are letting Ada hide the eggs! But Arthur, her big brother, thinks the egg hunt is going to be too easy now that he's eleven--so Ada has to do a test hiding to make sure it's super hard or else Arthur will retire from the egg hunt forever"--