As the trekkers hit the halfway mark on their journey andventure toward the snow line, a divide in pace emerges withinthe group. After a daunting rappelling obstacle down a 500-footvertical rock face, the group learns that they have broken afundamental rule of THE SUMMIT – that the group must traveltogether at all times – and having ignored the Mountain'sKeeper's repeated warnings, must endure the game-changingconsequences.