Oliver Smith is a man that is one of the select few people who found their way to Primeval Island and never made it off. Being immortal, he, his wife and a few other humans are the only survivors and they try to find ways to live on the island safely from the prehistoric animals of the island. Oliver is actually a powerful wizard, and his wife, a grand witch. His pets includes a baby Stegosaurus named Spike and a Woolly Mammoth named Regnodente.