The Commonwealth has sustained the lives of every citizen of the Diamond Age since year 3019. The community is a paradise; jobs for everyone, no poverty or sickness, and no crime. The Commonwealth seems like the ideal place to live... and time to live.
Since the discovery of the chronosphere- a deep-space expanse of wormholes that lead to different periods of time- time travel has been a relatively common thing. Expeditions are sent out each year to learn what can be learned about Earth and the Universe's past. Three young cadets trained to explore the chronosphere soon discover a secret that the Commonwealth had intended to keep secure... and a revolution is sure to arise.