The film tells the story of Aron Ralston, a professional climber.He started a new day with an excited spirit and made his journey to an isolated gorge in Utah.However, his new day suddenly turned 180 degrees after Aron had an accident: a rock falling and clamping his arm into the cliff, forcing him to hang in a isolated gorge.Utah.Followed by that, the moving, joyful, excited and romantic moments in Aron's life through his recalls when hanging on the cliff.He wondered if they were the last people he met in his life ...