本剧为太空竞赛题材剧《为全人类》的衍生剧，是同一设定下的全新篇章。
《星城》将我们带回太空竞赛另类历史重述的关键时刻——苏联成为首个实现载人登月的国家。但这次，我们将从铁幕后方探索这个故事，展现苏联航天计划中宇航员、工程师以及潜伏其中的情报人员的生存图景，以及他们为推动人类进步所承担的风险。

Season five of picks up in the years since the Goldilocks asteroid heist. Happy Valley has grown into a thriving colony with thousands of residents and a base for new missions that will take us even further into the solar system. But with the nations of Earth now demanding law and order on the Red Planet, friction continues to build between the people who live on Mars and their former home.