At head of title: Disney Phineas and Ferb. "Based on the series created by Dan Povenmire & Jeff 'Swampy' Marsh." "Disney XD."
Summary:
Brothers Phineas and Ferb attempt to break the record for the largest airplane ever built. Then, when they invent an antigravity machine, Major Monogram and Carl the intern decide it can only mean that the brothers are working for the evil Dr. Doofenschmirtz.
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