Nacho the puppy has followed Jamie and Tom into Dino World. Great! A new friend for Wanna! But what's not so great is when Nacho races off, chasing a Cretaceous lizard. The boys and Wanna are hot on his heels, but just as they reach him they hear a terrifying roar! Nacho may think he's big and strong, but surely he's no match for the ferocious albertosaurus ...Join the boys, Wanna, and Nacho the puppy as they head off on an extra-long adventure.