Discovering Grandma Lou's mysterious "bucket list" of things that she wants to do in her lifetime, Judy Moody is inspired to create a list of her own goals, from learning to do a cartwheel to visiting Antarctica.

As Hurricane Elmer hits, Judy, Stink, and the entire Moody clan hunker down and ride out the storm, but when the power goes out, Grandma Lou proposes some activities to pass the time in the dark.

Prankenstein strikes again! The Summer Science Showdown is just around the corner, and Stink is positive that he has the recipe for a winning entry. Soon he's acting like a mad scientist, with strong-smelling potions in hand and visions of super tomatoes dancing in his head. Judy takes one look at her busy brainiac brother and sees a situation ripe for a little mischief! Everyone knows that Judy has never met a practical joke she doesn't like, and...

"Look up! Look out! A comet is coming, a comet is coming! Stink is camped out in the backyard with his sister, Judy, and he can't wait to lay eyes on P/2015 OZ4, also known as the Sherman-Holm Comet. But then news of an asteroid hitting Russia reaches Stink, and suddenly he's feeling squeamish (and squash-ish) about close encounters of the outer-space kind. Will donning an aluminum-foil cape and building a bunker in the basement help keep him safe?...