The Sierra Research Facility in Alaska was once a beacon of cutting-edge research and development, but the dinosaurs in the base escaped, and the base has been cut off from the mainland. Much of the base has been flooded with seawater. Jack Allen is part of an expedition sent out to investigate the Sierra disaster. But when their boat gets attacked by a Megalodon, the crew becomes shipwrecked on the shores of Sierra and must find a way to escape.

The Sierra Research Facility in Alaska was once a beacon of cutting-edge research and development, but the dinosaurs in the base escaped, and the base has been cut off from the mainland. Much of the base has been flooded with seawater. Jack Allen is part of an expedition sent out to investigate the Sierra disaster. But when their boat gets attacked by a Megalodon, the crew becomes shipwrecked on the shores of Sierra and must find a way to escape.