Jamie is exploring Ammonite Bay when he meets Tess, a member of Dinosaur Club who lives in Ammonite Bay, too. Tess shows Jamie her favorite place—a secret cave with fossils all over the walls. They go through a tunnel at the back and discover some dinosaur footprints. When they walk along them, the two new friends find themselves back in the time of the dinosaurs! It’s amazing, but dangerous, too—they’ll need help from Dinosaur Club…