After the events of Jurassic Park, Dr. Alan Grant escapes Isla Nublar on a helicopter. While the Costa Rican Army is blowing up parts of the island to destroy the park's dinosaurs, Grant spots a helicopter of armed InGen field agents arriving on the island. Fearing that the agents have plans to collect any remaining dinosaur eggs and DNA samples for a new dinosaur park, Grant attempts to contact the Costa Rican Army. Grant's helicopter crashes on the island after the pilot attempts to stop him. Grant survives the crash and must find a way to stop InGen.