Paris in the aftermath of the Great Magicians War. Its streets are lined with haunted ruins, Notre-Dame is a burnt-out shell, and the Seine runs black, thick with ashes and rubble. Yet life continues among the wreckage. The citizens retain their irrepressible appetite for novelty and distraction, and The Great Houses still vie for dominion over France's once grand capital. House Silverspires, previously the leader of those power games, now lies in disarray.

The Jazz Age is in full swing, but Casiopea Tun is too busy cleaning the floors of her wealthy grandfather’s house to listen to any fast tunes. Nevertheless, she dreams of a life far from her dusty small town in southern Mexico. A life she can call her own. Yet this new life seems as distant as the stars, until the day she finds a curious wooden box in her grandfather’s room. She opens it - and accidentally frees the spirit of the Mayan god of death, who requests her help in recovering his throne from his treacherous brother.

As Lucy Muchelney watches her ex-lover’s sham of a wedding, she wishes herself anywhere else. It isn’t until she finds a letter from the countess of Moth, looking for someone to translate a groundbreaking French astronomy text, that she knows where to go. Showing up at the countess’ London home, she hoped to find a challenge, not a woman who takes her breath away. 

Humanity has colonized the planets - interstellar travel is still beyond our reach, but the solar system has become a dense network of colonies. But there are tensions - the mineral-rich outer planets resent their dependence on Earth and Mars and the political and military clout they wield over the Belt and beyond. Now, when Captain Jim Holden's ice miner stumbles across a derelict, abandoned ship, he uncovers a secret that threatens to throw the entire system into war.

Yetu holds the memories for her people - water-dwelling descendants of pregnant African slave women thrown overboard by slave owners - who live idyllic lives in the deep. Their past, too traumatic to be remembered regularly, is forgotten by everyone, save one - the historian. This demanding role has been bestowed on Yetu. Yetu remembers for everyone, and the memories, painful and wonderful, traumatic and terrible and miraculous, are destroying her. And so, she flees to the surface, escaping the memories, the expectations, and the responsibilities.