A group of former military elites set out to explore an uncharted abyss, not knowing their worst nightmare is waiting for them deep beneath the ground.
主演：索菲亚·布莱克-德埃利亚,安娜丽·提普顿,特拉维斯·托普,迈克尔·凯利,机关枪凯利,小约翰·科思伦,斯托尼·威斯特摩兰,Linzie Gray,Judyann Elder,Philip Labes,布里安娜·豪伊,Annie Ellis,Paul Lacovara,杰伊·赫农,William P. Brown
