From the Introduction/Prologue:
This is a game about people who have been abducted from their normal lives, had their memories fucked with, and are now being subjected to experiments by mysterious beings for unknown purposes.
You are trapped in an unfamiliar location referred to as “the Clinic”. This facility models itself after a hospita, but it is not what it seems. The PCs and other patients are referred to as “Subjects”. Subjects undergo treatments and experimentation while in the Clinic. Under no circumstances are Subjects allowed to leave the Clinic. All entrances and exits are closely monitored by the Staff.