1957年巴黎,著名服装设计师克里斯汀·迪奥因心脏病发突然去世,留下摇摇欲坠的Dior品牌。迪奥的学徒、21岁的伊夫·圣罗兰(皮埃尔·尼内饰)临危受命,成为Dior最年轻的首席服装设计师。他的个人处女秀“Trapeze”一鸣惊人,让世界都注意到了他的存在,也促成了他和皮埃尔·贝尔杰(圭洛姆·加里尼)的遇见。他们既是恋人也是事业拍档,在1962年创建了后来叱咤时尚界的奢侈品牌YSL。尽管内心的魔鬼时时困扰他,圣罗兰开始用他的服装改变整个世界…… ◎QAF。The film tells the story of three people for a year: a son (Magimel) diagnosed with cancer, a mother (Deneuve) suffering from helplessness and a doctor (Cécile de France) to do her job: One year and four seasons for these three characters to deal with the disease, to tame it, and to understand what it means to die while alive.。