As the Shannon children go through survival training, Jim and Elisabeth try to get some special time alone. Unfortunately, a noisy pterosaur gets in the way and Jim has to chase him off.
Three men who are bringing supplies to camp are found dead in the wilderness and no cause can be determined. Taylor suspects the Sixers are responsible, and he asks Jim to find out who the Sixers have installed as a mole in their camp.
Elisabeth runs into an old college boyfriend, Dr. Malcolm Wallace. The two of them are tasked with finding a way to deter a new species of dinosaurs from trying to breed on Terra Nova, which had been their breeding ground before the compound had been established. They synthesize a pheromone and Taylor and Jim use the chemical to lure the reptiles away to a new location.
Jim is a bit jealous of Malcolm, but Malcolm and Elisabeth's success in creating a new breeding ground for the pterosaurs affords Jim the alone time with Elisabeth that he'd been wanting.