After Yu Zhou, a cultural relic restorer, came into contact with the ancient book "Traces of Time", his consciousness was able to travel back to Shanghai in 1943 and became Gu Mingyuan's "ghost ally". She helps him escape danger by tweaking history - pouring wine glasses to distract his pursuers, knocking down cherry blossoms to create chaos.
But every time she was intervened, her body turned strangely silver: she coughed out silver blood and her left hand turned transparent. What's even more frightening is that modern mysterious organizations and Japanese military agents are hunting her at the same time.
When Gu Mingyuan pressed the blood-stained bullet on "Time Traces", and when Yu Zhou discovered the true purpose of the family's silver lock, they faced the ultimate choice...
Purpose: The scars of history cannot be erased, but the beliefs of the guardians can span time and space. When personal existence conflicts with the survival of civilization, there are always people who choose to use themselves as the fire to illuminate the future of the nation.