The two groups swim ashore to face a storm and a life-or-death search for water. A row breaks out with the men, while one of the women sees something that makes her suspect they may not be alone.

The men and women meet on the beach and agree to unite. Iraq veteran Hannah attempts to motivate the group to bond more, but a vicious tropical storm has a devastating effect on her.

The islanders have been marooned for ten days with barely anything to eat. Faced with starvation, they start taking increasingly terrifying chances, including a risky swim in the deep.

While the remaining castaways bicker, Patrick and Sarah seek comfort in each other's company and join a food expedition to the other side of the island that runs into difficulties.

Following Patrick's fall, the island is in crisis as the safety team struggle to land in a stormy sea. And with the need for food as urgent as ever, Tilly wants to join the hunt.

It's been a month, and the survivors are hungry and on the brink of disaster as their bodies start to fail; Simon leads a hunt in the jungle for the dangerous caiman crocodile.