Four years have passed since the incident in Jurassic Park. Dinosaurs managed to survive, move to a nearby island and adapt to the conditions of the wild. However, there is a powerful man who intends to bring the dinosaurs to the mainland in order to make money on this, without realizing what the consequences may be. He sends a group of his people to the island, who will catch dinosaurs. But John Hammond, learning about the intentions of this rich man, is going to redeem the mistakes of the past. He collects an expedition at the head of which puts Ian Malcolm, who must have time to appear on the island before the landing of mercenaries. But soon these two competing groups will have to join forces to save their lives.