The film tells the story of Shi Guoliang ( Du Yulu decoration ) to solve the problem of remote areas of the difficulty in seeing a doctor, take the lead, firmly devoted to the cause of " hospital ". This day (Xu Nannan decoration ) after graduating from University, eager to have her Inner Mongolia prairie, hope to be the angel caring doctors and health. However, in medical practice, she found herself unable to face the patient. Mother Sarina (Sarina decoration ) to encourage, hovering in the crossroads of life she choose to join the " hospital ", follow Shi Guoliang to heal the wounded and rescue the dying. Medical vehicle walking in the vast grasslands of Inner Mongolia, the hard way is rough, but could not stop the pace of their active help the local people, was also in a time of relief really grow up. A plague come unexpectedly let Shi Guoliang's son Shi Mengsheng ( Wu Jian decoration ) to see inside your heart to his father, to his girlfriend on, love, he decided to give up the chance of going abroad, joined the mobile hospital, be on the prairie and an angel in white.