对于四川省自贡市的余先荣和妻子胡宁来说,灾难就如约定好一般,不偏不倚降临到了他们头上:夫妻两人均为β型地中海贫血基因携带者,两人只有1/4的机会生下健康婴儿,另外还有1/4的机率产下重型地中海贫血患者。不幸的是,他们的大儿子余小峰正是一个重型地中海贫血患者。而要想彻底治好孩子的病,再生一个孩子捐骨髓救哥哥成了最佳选择。为了救赎命运堪忧的余小峰,夫妻俩决定赌一把,哪知意外惨败,再次生下一个患病儿子。这下,两个重病孩子拖累着本就风雨飘摇的家,这对不幸夫妇该如何抉择呢? For Yu Xianrong of Zigong City, Sichuan Province, and his wife, Hu Ning, the disasters were as unbiased and unbiased as they were: carriers of both β-thalassemia carriers, with only a quarter chance of both Give birth to a healthy baby, and another quarter of the patients have a chance of giving birth to thalassemia major. Unfortunately, their eldest son, Yu Xiaofeng, is a heavy Thalassemia patient. In order to completely cure the child’s illness, regenerating a child to donate bone marrow to save my brother became the best choice. In order to save the fate of Yu Xiaofeng, the couple decided to gamble, which accidental defeat, once again gave birth to a sick son. This time, the two seriously ill children drag on the precarious home, the unfortunate couple how to choose?