The “Enclaves” series by Vadim Panov continues! The disaster caused by the grandiose experiment at the Naukoma station turned the eastern part of Africa into a chain of islands. The nuclear tanker Hellespont Star got lost in the waters of this newly minted archipelago. Meanwhile, the guards and prisoners of the so-called "Africa" - "Correctional Facility No. 123", a prison that once belonged to the Enclaves Security Service, are trying to survive on one of the deserted islands of the African Sea. On the continent shattered by the Holocaust, there is a lack of basic necessities, so a huge tanker, which, unfortunately for the crew, docked on Prison Island, turned out to be a tasty prey for the former prisoners. At the epicenter of these events were naval engineer Viktor Kutsev and former editor Sergei Zvezdetsky, who received the nickname Gummy in prison. They had to not only survive in the heart of the Kenyan archipelago, but also penetrate the secret of the top-secret Sapsan project...