Testimonials from the Stars

As the solar system prepares to completely disappear from the universe, causal auditor Lin Xiu receives a warning from the future from his missing daughter: Absolute silence will not evade hunters, but will make it easier for humans to be deleted from history. To verify the warning, she must cooperate with a civilization that exists in "what has not happened" and decide whether to make the civilizations in the universe untamperable witnesses to each other at the cost of revealing the coordinates and crimes of all mankind.