In a daring heist, five elite US soldiers undertake a monumental task as they steal a newly discovered isotope of element 115 from a secret Russian lab. This element, capable of warping time and space, opens a portal to the hollow Earth, thrusting the soldiers into a prehistoric world filled with savage dinosaurs. As they navigate this perilous landscape, the team must rescue a kidnapped comrade, battle ancient predators, and face a decision that will change the course of humanity forever.
Meanwhile, a group of Russian soldiers, hot on their trail, crash-lands in the same treacherous realm. The team is in a constant fight for their lives as they seek a way back home. Their quest leads them to a race of primitive humans and an unexpected challenge against incredible odds.
Jurassic Underworld is a fast-moving adventure of survival, advanced weaponry, camaraderie, and the ultimate battle between man and prehistoric beast!