A rescue expedition is launched to find Bowen Tyler, a missing explorer who disappeared six years earlier in a remote and prehistoric land called Caprona. The team, led by Maj. Ben McBride, with the assistance of biologist Dr. Norfolk, and photographer Charly, ventures into the uncharted territory with the hope of locating Tyler alive. Their journey is fraught with danger as they navigate through misty valleys teeming with dinosaurs and other monstrous creatures, and encounter primitive human tribes.

As they delve deeper into the lost world, the team confronts not only the perils of the terrain but also hostile natives who dwell in the caves and jungles. Amidst these threats, they discover signs of Tyler’s presence and start piecing together clues about his fate. Along their thrilling quest, they battle vicious prehistoric beasts and uncover shocking truths about the mysterious land and its inhabitants. Surrounded by constant danger and uncertainty, the team faces a race against time to complete their mission amidst escalating tensions and dramatic challenges.