Sixteen strangers embark on a journey through the treacherous New Zealand Alps; a medical emergency occurs just hours into the trek.
An unexpected twist reverberates throughout the group; emotions surge as the keeper arrives with a shocking choice for the trekkers to make.
As the trekkers struggle with the arduous terrain, the division of alliances among them becomes noticeable.
A weather delay pauses the group's progress; an obstacle forces them to split into pairs to traverse a steep cliff.
As the trekkers hit the halfway mark, a divide in pace emerges within the group; the group learns that they have broken a fundamental rule.
