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。
The film is inspired by the true-to-life story of the discovery of the long-lost “Opus 28” manuscript from Norwegian composer Johan Halvorsen, originally performed in 1909 by Canadian violinist Kathleen Parlow, to whom the piece was dedicated. Campbell portrays a student who seeks to complete her thesis on Parlow by organizing a public performance of “Opus 28” from Toronto to Oslo. The cast includes Dueñas, Melanie Scheiner, Eve Duranceau, Maxim Gaudette, Rosa-Johan Uddoh, and Eileen Davies.
What starts as a routine audition for a no-name indie horror flick quickly turns deadly when a group of actors find themselves trapped inside a building with no way out. They're hunted by masked killers who know every inch of the building.
本片改编自同名小说，讲述了陪伴那些受伤、烦恼、困惑的人们的，是一条狗——。献给所有爱狗的人！宫城→福岛→新潟→富山→滋贺→岛根→熊本，旅行的狗和遇见的人们的故事。
