In 2460, the stargate network connected hundreds of galaxies.
After a routine jump, Border Patrol Captain Huo Yan suddenly had a stranger's personality fragment pop into his mind - a "living" consciousness that could think independently.
He was transferred to Yuan Station, the largest hub of the Stargate Network, for inspection, and met Su Yu, an astrophysicist at the Echo Research Institute.
Su Yu is a Class II echo-sensitive person and has been living with fragments in his brain for ten years.
He thought he knew enough about the echo effect until Huo Yan appeared - the signal strength of this border captain's fragments far exceeded any known model, and was homologous to a group of fragments in Su Yu's brain.
Both of their fragments came from Ying Ye, the engineer of the Stargate Pioneer Corps who disappeared three hundred years ago.
As the investigation deepened, they discovered that the echo effect was not an accident that was only noticed in 2350.
The Pioneer Group knew about the leakage of the quantum state of CQS consciousness as early as the 2150s, but chose to conceal it.
In 2173, Ying Ye spread his complete consciousness into the Star Gate network and became the "seed" of the star skeleton - a superconscious body condensed from the fragments of human consciousness for three hundred years.
When Xingyu asked "... Who?", The entire Stargate network began to tremble.
A border patrolman who only believes in action and touch, and a theoretical physicist who wraps everything up with reason, cannot tell which emotions belong to him and which come from fragments in the resonance.
Together they must face an ancient lie, a confused superconsciousness, and an ultimate choice about who I am.
Concept: When consciousness can be fragmented, received by others, and rewritten by history, where is the boundary of "I"? Can people still choose love and trust amid uncertainty?