ACT I — QuarantineThe Second Comet enters the Galactic Current and is intercepted as a biological hazard because no conventional crew or government can be identified.
ACT II — RecognitionThe Europagrades demonstrate continuity, memory, choice, disagreement, and bounded representation as Narian science and Aieron observation challenge familiar definitions of civilization.
ACT III — Consent and the Worlds of the CurrentThe scent-map problem expands to galactic scale as the Europagrades confront the difference between detecting injury, offering aid, and possessing authority to intervene.
ACT IV — A Seat Without a ThroneA wider galactic political order must decide whether distributed personhood can be recognized without forcing the Europagrades into a single body, flag, ruler, or permanent ambassador.