Five 16-year-old orphans wake up to find themselves in a strange building with nothing but endless flights of stairs leading in every direction, seemingly infinite. To find an exit, the five teenagers must learn to deal with the others’ disparate personalities, the lack of privacy and comfort, their clear helplessness, and a machine that only feeds them under increasingly ominous situations.

Adaptation du roman de science-fiction "House of Stairs" de William Sleator paru en 1974.