In an abandoned African wasteland, 12 battle-tested veterans scavenge ruins to survive. Camps turn old tires into shoes and use barbed wire as protection from aggressive lions. A rogue elephant forces Steven's camp to make shelter from junked cars.

Fuelled by their fishing win, Waz and Teal scavenge the ruins to build shelter; Wes fights a territorial crocodile for control of a fishing spot; Amber battles an eye infection; two survivalists are forced to leave the challenge.

Wes and Stee scavenge materials to take on their crocodile nemesis. Lions stalk Waz and Teal. A survivalist scores the first big-game kill of the challenge. A rogue elephant targets Joe. The wasteland forces two more to bow out.

An unrelenting electrical storm pounds the wasteland for three straight days; survivalists scavenge wreckage for roofing materials and gutters to stave off flooding.; barely protected inside a car, Alexa's challenge is at risk due to hypothermia.

Stalked by black mambas, lions and crocs, Wes eyes the exit; Teal's bow scores a big win; as an elephant closes in, Joe rigs an alarm from scavenged wire and shell casings; Steven and Frank's bid to turn sheet metal into a roof might end in disaster.

Wes and Stee brave croc-filled waters to build a fish dam and get their first catch of the challenge. Teal and Waz use a mosquito net to catch six terrapins. A heat wave has both Frank and Joe on the brink as medics assess if they can continue.