"(This is a half-hour long episode) When archeologists working for Flynn and Co. uncover the ruins of a secret society (possibly a predesesor of the O.W.C.A), they find a map to an ancient treasure. Phineas, Ferb, Isabella, and Emily build a high-tech airship, and go on a journey to find it, the kids stow away. Meanwhile, Mr. Biz and Buck have the same idea."@en . . . . . . "The Lost Treasure of The Golden Platypus"@en . "(This is a half-hour long episode) When archeologists working for Flynn and Co. uncover the ruins of a secret society (possibly a predesesor of the O.W.C.A), they find a map to an ancient treasure. Phineas, Ferb, Isabella, and Emily build a high-tech airship, and go on a journey to find it, the kids stow away. Meanwhile, Mr. Biz and Buck have the same idea."@en . .