Josie may be the youngest sister, but she takes care of everyone. She is the left-brained scientist to her twin sisters’ right-brained artistic chaos. She also has been their de facto band manager since she was a teenager. When Ara, her middle sister, calls from jail, it isn’t exactly a surprise, and Josie knows exactly how to snap into action. Emma is the quintessential frontwoman, but the success of The Twins’ first (and only) album is two decades behind her. Hiding under the surface of her swagger is a long-held guilt that has turned her into her sister’s enabler. Bertie, who raised her three daughters as a single mother, has always taught them that family won’t always be around to take care of you. But now she must decide if she should reenter their lives in their greatest time of need --- or watch to see if the resilience she’s taught them will help carry them through.

Emi Vargas, whose parents helped save the world, is tired of being told how lucky she is to have been born after the climate crisis. But following the public assassination of a dozen climate criminals, Emi’s mother, Kristina, disappears as a possible suspect. A determined Emi and her father, Larch, journey from their home in Nuuk, Greenland, to New York City, now a lightly populated storm-surge outpost built from the ruins of the former metropolis. Thirty years earlier, Larch first came to New York with a team of volunteers to save the city from rising waters and torrential storms. Kristina was fighting massive wildfires that ravaged the western United States. They became part of a movement that changed the world --- The Great Transition --- forging a new society and finding each other in the process.