Phineas and Ferb are headed to their grandparents' lake cabin for a weekend of outdoor adventure with their friends! They play games, toast marshmallows, and share spooky stories around the campfire. But could there be a real-life Bigfoot watching them from the shadows? The fun continues when Grandpa tells everyone the tale of Badbeard the Pirate—and Phineas and Ferb lead the hunt for Badbeard’s long-lost treasure! Readers will love this fun 112-page chapter book filled with exciting black and white pictures from the show.