In a haunted Mayan jungle, a painful injury tests the resolve of survivalists Leah and Caesar, who contend with suffocating humidity, hungry predators, torrential rainfall, unrelenting insects, and intoxicating fruit.

Terribly poisoned without food or water, in the arid and desolate, savannah region of Brazil, survivalists Gary and Karra will be tested unlike any other survivalists before them. Depleted and broken will either of them make it to Day 21?