They left for answers. They found a deadly puzzle.

When astrophysicist Fumi Nakamura discovers an extraordinary megastructure orbiting a nearby star, its Makers summon her to their seeming paradise, bringing humanity with her. They communicate through a cryptic linguistic device, the Canon, which puzzles and entrances all who study it.

Three centuries later, Fumi's descendant Morgan faces the reality of this new world. Stranded on a desolate ring orbiting Inworld - a dangerous Eden at the heart of the star system - Yomi's population faces famine. And worse, they're bound by the punitive laws of the Canon. Laws they've spent generations trying to translate. Laws enforced by merciless beings.

Their only chance at survival rests on contacting a fledgling sentient race. But to succeed, Morgan and a team of specialists must complete Fumi's work and decode a language like none they have ever encountered. Perhaps then they'll finally understand why they were brought to this world.