When Dana visits home, Kayla feels left out when Dex chooses to complete his dino experiment with his sister instead of her. Meanwhile, the dino-loving siblings try to figure out why certain Dreadnoughtus group together out of their large herd.

Dex and Kayla join Saara at her internship at an ostrich sanctuary, where Dex hopes to solve Dino Experiment 1016: "What does a T. rex really sound like?" But when an ostrich egg under Saara's care is dino-napped, it's Dex and Kayla to the rescue!