In a distant future, humanity is confined to domed cities known as Domepolis after an environmental cataclysm. These cities are maintained and supplied by private corporations, raising questions about the cost to the inhabitants. In a Siberian Domepolis, virtual‑game champion Gainer Sanga is arrested on suspicion of committing an Exodus, an unauthorized and government‑prohibited venture beyond the dome walls. While imprisoned, he meets Gain Bijou, a mercenary bent on escaping. Together they steal a mysterious Overman from Duke Medaiyu’s mansion, confront the Siberian Railway Patrol, and lead a massive Exodus out of the city toward the eastern land of Yapan, where their ancestors are origi...