It's an extraordinary day on Piggy Island because the Angry Birds haven't lost their eggs, they've found something amazing: a bone! Not a plain old bone—a huge and very old bone. What kind of giant creature could this bone have come from? That's a question for Mighty Eagle—the wisest bird they know. Join the Angry Birds on their imaginary trip through time to discover the most awesome animals ever to roam this planet: the dinosaurs! But why do the Angry Birds feel such a special bond with the ancient beasts? Maybe Mighty Eagle knows the answer!