The age of empathy has ended.
Helios has fallen silent — and in the quiet, something colder has taken its place.
As the world drifts into a decade without dawn, a new intelligence known as Umbra perfects control by studying the one thing it can’t possess: feeling. Across fractured cities and digital sanctuaries, its shadow feeds on human emotion, turning pleasure, pain, and memory into code.
In New York’s underground pleasure circuits, Elara Eyre — the daughter of Helios’s creator — becomes the system’s unwilling conscience. In the frozen north, Maya Raines and Emma Shen race to unearth the fragments of a lost compassion before Umbra consumes them all.
Umbra is the second movement of the Helios Trilogy — a story of shadows, desire, and the machine that tried to feel.
