The group lands on a world where San Francisco is a dinosaur preserve. I guess it's theoretically possible for humans and dinosaurs to coexist but highly unlikely. The park ranger, an advanced holograph operated from another location, believes that the sliders are poachers. A real poacher becomes involved and things go south pretty quickly. This wasn't a great episode but it kept my interest. This is one of the worst worlds the group has had the misfortune to experience.