女孩凯莉被诊断患有全球只有几千例的罕见病：贝敦氏病，并将不久于人世。但她生活积极开朗，在她失明并且失去运动机能后，仍然参加了学校的啦啦队，在最后的生命里探索一切不可能。

　On May 16, 1986, in the small, ranching community of Cokeville, Wy, David and Doris Young took an elementary school hostage for several hours before detonating a b…