The Golden Armory of Cornelius Coot!.At Fort Duckburg, Webby convinces the boys to join her on an adventure to find Cornelius Coot's golden armory; a treasure Della never found. They discover a secret mine entrance under Coot's statue, and using Della's journal, search for the treasure. Meanwhile, Big Time Beagle, who was kicked out of the Beagle Boys, follows them in the hopes of finding the treasure first and win back Ma's approval. Elsewhere, Della tries to get ready to sky-write over the fort, but has to repair the plane with Launchpad...