AU in which Dean works as a nurse in a wretched, twisted hospital. Tests are done on humans, and unspeakable things take place everywhere you look. One day, Cas is captured and taken hostage to be tested on in this terrible hospital. Dean and Cas side with each other to break free from the pale, dead walls of the jail.

Dean falls asleep thinking about Castiel most of the time. One night, Castiel overhears Dean mumbling strange things, strange enough to make Castiel dive into Dean's dreams. Becomes Destiel slash fic in the chapters later on.