Board a captured U-boat and drift into the icy waters of the Antarctic, only to discover the tropical continent of Caspak. Here, evolution operates on a different timeline, with dinosaurs and primitive humans coexisting in a savage hierarchy. The survivors must navigate this terrarium of terrors, where life evolves from tadpole to human within a single generation. It is a gripping mixture of wartime tension and biological wonder that questions the origins of life itself.