Zhang Shutong had two female classmates:
One was the proud young lady of a wealthy family;
The other was a cool and aloof girl who served as a shrine keeper in the mountains.
One was murdered eight years ago, the other died eight years later.
Zhang Shutong had a secret he could never tell anyone:
He could travel back in time.
...
But after going through so much trouble to save them, why did they start fighting each other?
...
Deep mountains, a vast lake, a sacred temple, shadows beneath the water, a serial murder case from eight years ago, and a girl's gradually cooling body