Four years after the failure of Jurassic Park on Isla Nublar, John Hammond (Richard Attenborough) reveals to Ian Malcolm (Jeff Goldblum) that there was another island, Isla Sorna ("Site B") on which dinosaurs were bred before being transported to Isla Nublar. Left alone since the disaster, the dinosaurs have flourished, and Hammond assembles a team to visit and document the area before it is exploited by others. When the team reaches the island, they soon discover the presence of another group of people. They however are not there for biological data but instead have something more sinister in mind. After a series of events, both groups become stranded when all their communication equipment is lost. It is then that the terror really begins as both groups scramble for their lives as they try to find a way off the island alive.