Nine veterans are marooned on a bug-infested island with no tools or maps and they must scavenge wreckage to help them survive; insect bites ravage all camps; a large predator stalks one team; Bulent secures fire and chases a protein score.

Bulent scores an armadillo with his bare hands, but Na'im struggles to process the win using a fan blade; Andrew and Heather try to make fire, but the only sparks come from their conflict; Candice's team repurpose debris to trap a protein source.

Ravaged by bugs, Heather must move camp, but with no map the gruelling trek puts Andrew's challenge at risk; Bulent works to trap a wild pig, but his approach frustrates his team; Candice tries to turn the pelican carcass into a new food source.

The competition takes on a true-life survival situation when nine seasoned challengers are stranded on a remote island. Abandoned with no map or tools, they must fashion what they need to survive from wreckage and debris strewn across the island.

Medics intervene when Justin tries fruit known as the `Little Apple of Death'; a clash about fire sparks into a raging fight between Kerra, Na'im and Bulent; Andrew and Heather question Patrick's hunt for a saltwater croc.

After an emotional reunion, Na'im vows to get Rachel to day 21; a group must migrate through a croc-infested swamp; Bulent finally comes nose-to-snout with the elusive pig he's been hunting; a survivalist is forced out of the challenge.