影片讲述了因不明感染事件而被封锁的建筑内，孤立无援的幸存者们对抗以无法预测形态进化的感染者的故事。
Two teenage girls, Yin Jia and Tong Tong, live together in this colour-drenched vision of Changsha, China. When Tong Tong drifts away and falls in with a drug dealer, Yin Jia's love for her means she'll risk everything to keep Tong Tong by her side.
