Aron Ralston is an American Outdoorman, engineer and motivational speaker. He went on a camping trip out at Blue John Canyon, and while he was passing by the arrow area of the canyon, a boulder got loose and fell down, crushing onto his right arm and smashing it against the canyon wall. Aron tried to call for help but couldn't because he is too far away and the nearest people are away from earsight. Aron then tried to cut the boulder loose using the knife, but then he realized that it was futile. He then tried to cut off his arm but the knife was too blunt.
Aron then started a video diary and tried to escape from his situation. He had flashbacks of his past relationships and events. And he realized that what he did in the past lead to what happened here in the Canyon. Because non of his friends know where he is going, in fact no body does.
I am not reveal more, but I think this is a very emotional and yet inspiring movie because it tells me how precious life is and sometimes you may come close in losing it. Aron is very brave and is able to survive for 127 hours under that rock. I hope that this movie will also inspire many other people so they will realize how precious and vulnerable life is.