Android Rhett Caleston manages to survive the purge, after which he joins a group of rebels fighting on the side of the mysterious revolutionary Virgil, owner of the spaceship Aphelia. The android does not know who he is, by whom and why he was created - he has neither memories nor knowledge about himself. And indirect signs only indicate that Rhett is not a simple production model, but a single copy, made to order. After training on the Aphelios, Virgil appoints Rhett as his agent in Extremum, a giant ecumenopolis. The Android must become a slither, a hacker, and obtain the necessary information for the uprising. And Rhett is going to use this opportunity for his own purposes: to find out who he is and by whom he was created. Rhett strives to get to the bottom of the truth, but something else is much more important: will he be able to bear its burden and pay the required price? " - Would you like to know who you are? - Yes. - Why? - Because it would help me get my bearings."