Our heroes defeated the Bionic Booger Boy but they totally forgot

about those rascally Robo-Boogers, plus George

and Harold's time travelling Purple Potty lands

them in a strange, parallel universe. Watch out for the evil

twin lookalikes!

Can they handle this mess on their own, or will the Captain need

to swoop in and save the day?

This book contains:

Captain Underpants 7: Captain Underpants and the Big, Bad

Battle of the Bionic Booger Boy, Part 2: The Revenge of the Ridiculous

Robo-Boogers