A young girl called Kelly Ho is preparing for her wedding day, but the celebration is disturbed by two thugs who come in order to reclaim the debt her fiancé made while recklessly gambling. An unexpected fight breaks out and Kelly hurts one of the thugs, due to which she is sentenced to serve 18 months in a containment facility for women. When arriving there, the girl does not know that she has found herself in the middle of a war for power between fellow inmates and a desperate struggle to hush things up by an incompetent prison superintendent.