The story begins with the group seeking adventure on a "via ferrata" mountain trail that has been closed for repairs. Despite the warnings and the visible closure signs, Fred, the group's experienced but reckless leader, convinces the others to proceed.

(Johan Libéreau) emerges as the hero, using climbing gear as weapons. The final confrontation occurs on a collapsing suspension bridge. Unlike typical horror films, the villain is not supernatural; he is a mentally ill survivor of previous accidents. In a gut-wrenching finale, Fred manages to push the hunter off the bridge to his death, but not before losing two more friends.