Chewoo discovers a dinosaur's egg left at her doorsteps. As the egg hatches a baby dilophosaurus appears and it believes that Chewoo is its mother. From that day forth Chewoo begins to take care of the baby dinosaur. While Chewoo and the baby spend their days in bliss, the mother dilophosaurus come to Greenit and rampages the village to find her missing baby.

The friends are listening to Chewoo's story about a sunken treasure ship at the bottom of Greenit's ocean. Yoohoo and his friends decide to look for the ship and they use Roodee's robot fish to lead the way. While on their treasure ship hunt they come upon many sick ocean creatures.