Three men are committed to Her Majesty's Prison Cairncrow on the same day. There's Paul - a young, tough inner-city robber. Simon, by contrast, is gentle, feminine, and obviously gay, and the third, John, is an ex-vicar. The prison is a corrupt and cruel institution, run by sadistic officers and bullying hard men. It's also a sexual minefield - the old-timers prey on the newcomers and the guards prey on everybody. Will the three new inmates find their niche in this brutish new environment?