How to choose a life partner or find your calling? The residents of Arena don’t ask such questions. After all, everything is decided for them by a bioprofile that shows the balance of qualities and abilities of each person. It determines compatibility of lovers, matches suitable spheres of activity, and helps identify and isolate aggressors. In addition to the bioprofile, the lenses in the eyes of Arena residents contain many useful functions and replace most gadgets. And peace here is guarded by the mysterious Black Shadows.
What will become of the brilliant Alumondia graduate who got a job at the Prosperity research center—promising to make the world and the people in it better by interfering a little with the genome… And what about Nolan, a young barista who lives in the underground city of Ghost together with other rejected natural-borns, and with envy watches people above?
One day, a strange guest appears in the café. What secret will he reveal to Nolan?