Invasion! It's scrap day on the ranch, and Hank is looking forward to a delicious feast of juicy, fatty bacon scraps. But just as Little Alfred is doling out the goods, two very unusual-looking creatures fly overhead, and what was promising to be a glorious day takes a dramatic turn for the worse. Suddenly the scraps have vanished, and the Head of Ranch Security finds himself dealing with an invasion by a couple of ancient dinosaur birds! Can Hank get to the bottom of this latest mystery...before it's too late? Hank and Drover sing "Why Does a Pelican Look So Bizarre?, " and Rip and Snort belt out "Cannibal Trash" in this hilarious adventure for the whole family.