In 2102, the age of nuclear explosions, in the Appalachian wasteland.
Chen Shi, the last "pure human" immune to the extinction virus, awakens underground. Siren, a radbeast queen with intelligence and a hive mind, struggles to survive the plague.
When she senses his genetic signal, these two outcasts abandoned by the world forge the wasteland's most dangerous pact: the scientist needs muscle, and the queen needs knowledge.
Their union instantly ignites the greed of every faction. The Brotherhood of Steel wants to cleanse them, the Institute wants to dissect them, and the Enclave's war AI sees them as the final key to activating its ultimate control protocol. As they flee their hunters, they discover that both their existences are closely connected to a buried "Phoenix Project."
Crossing the radiation valley and diving deep into ancient bunkers, they must uncover the plan's dark truth and make a choice before the ultimate protocol deep within the facility: activate the cleansing and eradicate all "contamination," or submit to control in exchange for survival?
Or risk everything to seek a third path no one has ever taken, even if it means they themselves will become the "shadows" and "ashes" that define the new world.
This is a story about searching for humanity at the end of the apocalypse, seeing a soul in the eyes of a monster, and building a "home" together in a world doomed to destruction.
