"Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot" is a humorous juvenile fiction book by Dav Pilkey. Published by Scholastic, Incorporated in 2015, this hardcover book is part of the Captain Underpants series and features illustrations by the author himself. The story follows the adventures of Captain Underpants and his nemesis, Sir Stinks-A-Lot, in a tale filled with action, adventure, and friendship themes. With 208 pages, this book is sure to entertain young readers with its engaging and entertaining storyline.