1970年代末，在西北敕勒川牧场做了小半辈子牧马人的小学教师许灵均（朱时茂）一路风尘来到北京饭店，与30年未曾谋面的父亲、旅美华侨企业家许景由（刘琼）见面。当年，追求个人自由的许景由无法忍受与妻子的错误婚姻，丢下妻儿去了美国。此次归来，他有心带许灵均回美国继承事业。 交谈中，许灵均不认为将自己融在集体中、时时以国家利益为重的行为是思想陈旧的表现，对于父亲的舒适生活，他并不艳羡。 回顾自己几十年来所走的道路，虽有幼年成为弃儿、青年被打成右派下放牧场的悲惨经历，却也数次从牧区质朴、善良的乡民身上感受到人间温情，而在艰难岁月中与四川苦命女李秀芝（丛珊）结为夫妻后，许灵均更是尝到苦尽甘来的心酸与甜美。他认为，国家在好不容易迈过“文革”这个大坎之后，个人更应该同亲朋一起，不离不弃地跟着她走向新生。This movie is adapted from the novel Heroes in Tongbai. Xiao Hua, a sister of Zhao Yongsheng, is deserted by her poor family. He Xiangdong, a woodworker, adopts her and rename her He Cuigu. To steer clear of arrest by the enemy, Dong Hongguo, offspring of a revolutionary family, is renamed Xiao Hua so as to be adopted by her adopter. Later, Zhao Yongsheng's parents are killed by the enemy.
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