Four women, named after musical instruments, talk about a quiet stable life in the sanatorium. It provides everything you need, but life there seems to be a little boring. To have fun, the heroines talk about their lives. Everyone has their own story, but something in common brought them here - murder. The sanatorium turns out to be a colony, and the heroines are sentenced to life imprisonment. They are doomed to spend the rest of their lives in the "zone within the zone." Where do these women find hope and are they entitled to it? The text is based on interviews with women sentenced to life imprisonment.