The story begins with a depiction of a small river and oasis in the scorching North African heat of the Cretaceous period. A Spinosaurus with numerous scars along its facial features makes into way into the oasis’ forest, briefly encountering a pair of Deltadromeus which beat a hasty retreat in the face of the hulking predator. The Spinosaurus is not interested in them though; its destination is the local river. Plunging under water, with nothing but the sail on its back showing, the Spinosaurus makes its way through the swamp, passing turtles, crocodiles and pterosaurs as it does so. Briefly emerging from the water, Spinosaurus attacks and devours a small crocodile before continuing ever deeper into the swamp. Resting at the river's edge, the Spinosaurus is startled when a panicked Carcharodontosaurus plunged into the river, pursued by an enraged herd of Paralitians; the sauropods quickly trample the hapless carnivore to death, while two other Carcharodontosaurus beat a hasty retreat.