After an unexpected twist, game plans shift as they begin to tackle harder terrain. While the trekkers are challenged with crossing a rickety bridge, emotions surge as the Mountain's Keeper arrives with a shocking choice for the trekkers to make, leaving one person’s fate hanging by a thread.

Sixteen Americans embark on a once-in-a-lifetime journey through the treacherous New Zealand Alps in an attempt to reach the peak of a mountain in just 14 days in order to keep their share of the $1 million prize they're carrying in their backpacks.