Two sisters, Becca and Rosaline, who have grown apart over the years but through tragic events learn to love and respect one another all over again. Each sister flies out to the Isle of Man to discover and repatriate the body of their mother, Mary, who they learn has been living a double life, leaving their father Richard at home in Manchester, whilst creating another world for herself.

　　正值热浪之中。 法国某地已形成倾盆酸雨的不祥云层。 他们在全国范围内势不可挡地前进，迫使人们走上道路，并引发了一场普遍的恐慌运动。 在一个即将沉没的世界里，一个离散的家庭（扎德、玛丽和他们的女儿塞尔玛）必须团结起来面对这场气候灾难并试图逃离它...