在吉林省省会长春,有这样一个特殊的四口之家:爸爸常年外出打工,无暇顾家;妈妈患有精神病,时常发作;姐姐患有先天性脊骨发育畸形与肺叶缺损,连走路都吃力。从八年前开始,当时仅七岁的妹妹便扛起了家庭生活的重担,接送姐姐上下学,照料患病的母亲,做饭洗衣料理家务…… Changchun, capital of Jilin Province, has such a special family of four: Dad perennial migrant workers, no time to go home; mother suffering from mental illness, often attack; sister with congenital spinal deformity and lobar defect, and even have to walk hard. From eight years ago, only seven-year-old sister then took up the burden of family life, pick up her sister to go to school, care for sick mother, cooking and washing housework ......