"Tom and Jamie can't believe their luck when they find a secret entrance to a prehistoric world filled with dinosaurs! The boys return to the dinosaur world looking for adventure. But they get a little more than they bargained for when a herd of triceratops charges right through their lunch! It looks like there's only one way to avoid getting squashed: they'll have to hitch a ride on a dinosaur"--P.  of cover.
Determined to solve the mystery of their disappearing food stores and to further explore the island, the eight castaway monkeys try to orient themselves by looking for the shapes that Bushbaby saw in her dream.
Tom and Jamie are on a rescue mission: a quetzalcoatlus has dino-napped their friend the wannanosaurus. With a wingspan of 40 feet, the quetzalcoatlus is a high flier--and a fast one. Tracking Wanna won't be easy, but Tom and Jamie have a plan.