The episode followed a female Coelophysis as she tried to survive in the dry season. The Coelophysis was shown hunting a herd of Placerias (mammal-like reptile), looking for weak members to prey upon. Early pterosaurs (specifically Peteinosaurus) were featured, depicted cooling themselves in what little water was present during the drought. A female rauisuchian (Postosuchus, one of the largest carnivores alive in the Triassic) was shown following the Placerias herd, and kills one of the members who had earlier been bitten by her and weakened by blood loss. Still searching for food, the Coelophysis are shown discovering a burrow of the small mammal-like cynodont. Eventually, one young cynodont strays too close and is eaten and the father attempts to protect the youngster, but to no avail. At night, the pair of cynodonts are shown eating their remaining young, then moving away. The female Postosuchus is later shown to have been wounded by Placerias's tusks (the wound is on her left thigh), and is beaten out of her territory by a rival male Postosuchus. Wounded, sick and without a territory, the female dies and is eaten by a pack of Coelophysis. As the dry season continues however, food becomes scarce and the Coelophysis start killing and cannibalizing each other. Finally, the wet season comes again, and the majority of the Coelophysis have survived, along with the cynodont pair, who have a new clutch of eggs. The episode ends with the arrival of a herd of the prosauropod Plateosaurus, foreshadowing the future dominance of giant sauropods after the Triassic-Jurassic extinction event.