Attempting to survive for one month in the Arctic with no tools and just the body of a fallen animal, Lindsay, Joe and Zane race to preserve their meat, build shelter and make fire; illness and the harsh environment push them to the breaking point.

Three strangers try to endure 30 days in the Arctic with no tools, just the clothes on their backs and one fallen animal; Ben, Nate and Robert race to preserve their musk ox before it spoils and it attracts the attention of dangerous predators.

Living as their ancestors once did with no tools, Anne, Phil, and Shane struggle to make fire, preserve meat, and protect themselves from hungry predators; when a fire destroys a vital resource, they must adapt or face starvation.

The contestants' health and resolve are put to the test when the cold and snow adds to the already brutal Arctic climate.

Three strangers try to endure 30 days in the heart of the Louisiana swamp with absolutely no tools; all they have are the clothes on their backs and one dead alligator; they attempt to survive off the land.

Donny, Shawn and Matt have to survive the inhospitable Louisiana swamp for thirty days, living off only one resource: a fallen wild boar; their survival skills are put to the test as they battle torrential rains, hunger, and frightening illness.