Finding himself in a new era, and approaching retirement, Indy wrestles with fitting into a world that seems to have outgrown him. But as the tentacles of an all-too-familiar evil return in the form of an old rival, Indy must don his hat and pick up his whip once more to make sure an ancient and powerful artifact doesn't fall into the wrong hands.

During the Vietnam War, a recon unit ventures to an isolated jungle valley to uncover the fate of a missing platoon. They soon find themselves in a fight for their lives against an unexpected enemy — prehistoric dinosaurs.