First contact gets complicated when a sentient AI asks a junior astronomer to handle room reservations for half a million alien refugees.It's November 2040, and Miharu Nakayama—a trauma-haunted, big-hearted, poker-playing telescope jockey—has just started her new job at Keck Observatory when a mysterious AI taps her to play ambassador for an arkship full of aliens. According to the AI's chilling simulations, human fear and greed are likely to plunge Earth into global war over the aliens’ advanced technology. The algorithms claim Miharu is the only one who can give Earth a fifty-fifty chance at peace.If Miharu succeeds, alien technology will halt global warming and solve a host of other Earth problems. If she fails, humans, aliens, and AIs may all perish in nuclear fire. No problem. All she needs to do is overcome her internal demons, mentor the aliens in human diplomacy, and convince hostile Earth nations to play nice. Oh, and cope with the emerging sentience of her own AI personal assistant. All things in which she has zero experience.