Littlefoot has Chomper as a Sharptooth close friend, but Petrie has none. All that changes when Ptero comes. But Ptero is afraid of Leaf Eaters, falsely believing his father to have been killed by them. Ptero keeps his dietary nature a secret but Petrie eventually find out. Petrie agrees to keep it a secret, but what will they do when others find out? Will they accept him or not?