The film follows Joey Rayburn (Kathleen Turner), a former nightclub owner who is sentenced to prison for a crime she didn't commit. Upon arrival at the women's correctional facility, Joey quickly realizes that the system is corrupt and that the guards are more interested in exploiting the prisoners than in rehabilitating them.

Upon its release, "Prison Heat" received mixed reviews from critics, with some praising Kathleen Turner's performance and others criticizing the film's predictable plot and action sequences. Despite this, the movie has developed a cult following over the years, with many fans appreciating its blend of action, drama, and social commentary.

As tensions rise and the stakes grow higher, Joey finds herself at the forefront of a full-blown prison riot. With her newfound allies by her side, she must confront the corrupt authorities and fight for justice, all while facing her own demons and personal struggles.