本片根据“格拉尼特山高手”消防队英勇事迹改编。影片讲述在“格拉尼特山高手队”创建之初，队里既有失足青年也有人面临婚姻危机等各种生活问题。队长埃里克·马什却始终充满热情，督促队员刻苦训练。这支看似由失意者组成的团队也逐 步成为城镇的荣誉象征……然而这一切被突如其来的森林大火所打破。面对近在咫尺的灾难，作为尖兵部队的他们勇往直前，却在阻止火势蔓延时被困火海、命悬一线。整个团队的安危与荣誉也面临巨大考验。

　　A passionate 26-year old BMX dirt jumper, Phineas Cooper, gets the chance of a lifetime to compete at the regional level to qualify for nationals. But his pursuit of triumph sours with a crash that knocks him out of commission. Determined to get back on track for the next major competition, he undergoes physical therapy for a couple months. In the meantime, he is ordered by court to complete community service for many unpaid citations for reckless street riding. He is forced to volunteer at a local youth center for at-risk teenage boys, and meets Jordin Riley, a beautiful humanitarian. To impress her, Phin decides to sign up for mentorship and handpicks one of the toughest boys named Blue Espinosa, a 14-year old whose mother is a heroin addict, and whose father was gunned down. As Phin takes Blue under his wings, he and his friends lead him on adventures of riding dirt trails, big jumps and cityscapes..