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 islanders have been marooned for ten days on their deserted island with barely anything to eat. Faced with starvation, one of the group wants to leave. Rob leads the desperate search for food, but their attempts to fish and hunt come to nothing and they find themselves taking increasingly terrifying risks. Rob bravely leads a group of the strongest swimmers into the sea to set a fishing net in the perilous deep water, but they quickly get into trouble. Most of the swimmers make it back to shore, but the men and women are left in crisis when they realise Rob is nowhere to be seen.