Lin Shen has a secret: he can hear anyone's heart.
This makes him the most ideal "Unvoiced One" for the United Earth Government - a scientist who is sent on a suicide mission to extraterrestrials after his memory is erased, because he can see through lies without interrogation.
Mission goal: Go to the "Purgatory Star" in the center of the Milky Way and reverse the "gray tide" particles that devour the star.
But when he arrived, he discovered he was not alone. "Shining", a group of plasma life with ancient wisdom, is also trying to save its star.
Lin Shen felt peaceful for the first time - because Shuoguang had no readable "voice" and was the only being in the universe that would not lie to him.
However, as his memory recovered, Lin Shen heard a truth that froze his soul: Shuo Guang's civilization was on the verge of extinction, not because of a natural disaster, but because of the consequences of mankind's secret experiment ten years ago.
His ability to read minds prevents him from escaping anyone's sins - including his own.
The countdown is 36 hours, and the shining light is about to die. Lin Shen must make a choice: save humanity, or save his only true friend?
And the last voice he heard came from a dying star.
