Miles Vorkosigan, the main character in the series, and Ekaterin Vorsoisson are enjoying a delayed honeymoon off-world while their first two children are approaching birth in their uterine replicators back on Barrayar. They have just left Earth to begin the journey home when Miles is dispatched by Emperor Gregor Vorbarra to Graf Station in Quaddiespace to untangle a diplomatic incident in his capacity as the nearest Imperial Auditor. There, he is unexpectedly reunited with the Betan hermaphrodite Bel Thorne, a trusted former Dendarii Mercenaries subordinate and his good friend.