The teams chopper into their first challenge in the rugged Southern Alps. They soon feel the pressure as the trackers start their chase, hungry for a capture.

The seven remaining teams struggle in the extreme bush of Fiordland; cracks start to emerge between teammates when they get completely lost.

Tensions rise in Team Orange when they lose their map again; Team Blue face intense pressure as they are strategically targeted by the remaining teams.

The 24-hour challenge sees teams chased day and night by the trackers, who have doubled up their numbers to add even more pressure on the exhausted contestants.

With four teams remaining, the pressure to escape from the relentless trackers is higher than ever; an argument leads to a catastrophic sequence of events.