Ricky Ricotta's Mighty Robot Vs. the Naughty Nightcrawlers from Neptune

Ricky Ricotta and his Mighty Robot are in for a sticky, slimy surprise!

Ricky and his Mighty Robot have built the coolest fort Squeakyville has ever seen, and they can't wait for the fun to begin! But then Cousin Lucy arrives with her pets and plans to turn it into a princess castle -- what a party pooper!

Things completely fall apart when Nimrod Nightcrawler, a wicked worm from the planet Neptune, digs a tunnel under Ricky's fort, trapping the Mighty Robot. Now it's up to Ricky and Lucy to put a stop to this nightmare -- and save their friend!

Dav Pilkey has written and illustrated numerous popular, award-winning books for children, including the Captain Underpants and Dumb Bunnies series;Dog Breath, winner of the California Young Reader Medal; and The Paperboy, a Caldecott Honor Book. He lives with his wife in the Pacific Northwest. Visit him online at www.pilkey.com.

Dan Santat wrote and illustrated the graphic novel Sidekicks, and has also illustrated many acclaimed picture books, includingThe Guild of Geniuses and The Adventures of Beekle: The Unimaginary Friend, which won the Caldecott Medal. He lives in Alhambra, California, with his family. Please visit his website at www.dantat.com.