While recovering from a severe injury, Wisting receives an anonymous letter. The cryptic content leads Wisting to suspect a possible injustice in an old murder case where a 17-year-old girl was killed, and her ex-boyfriend was convicted。影片以灾后重建为背景,通过一个名叫无素子的羌族普通母亲,展示羌族百姓对待自然、生命、灾难等问题的态度和思考。。