Summer is almost over and Jace isn't happy about starting the new school year... until he meets his teacher, Ms. Merwin. The two fourth grade classed depart for a field trip to the Crystal Lagoon Aquarium, when the school bus breaks down at a National Park near the Lagoon. While eating their picnic lunch, Jace and Rocco's new friend, Mia disappears beyond the trees. Jace goes in to look for her. When he arrives at the edge of the water and finds Mia, he can't believe what he sees!
It's the first day of summer vacation. Jace and his best friend, Rocco are anxious to get to the park to play catch. Their ball accidentally goes into the Forbidden Forest. Jace goes in to look for it and he gets lost. Two young dinosaurs named Ribney and Ryder are in the forest and help Jace find his way home. But before they do, Jace helps the
dinosaurs with a big problem they have!