The narrative centers on Dr. Alan Grant, a renowned paleontologist who previously experienced the resurgence of dinosaurs in the original "Jurassic Park" film. In this installment, Dr. Grant is approached by a wealthy couple seeking his expertise to locate their missing son on Isla Sorna, a perilous island known for its uncontrolled dinosaur population. However, he soon realizes that he has been misled, and the mission is far more treacherous than anticipated.