A body is discovered in an abandoned old house in Huai Tree Village, where it has stood empty for years.
After arriving at the scene, criminal investigator Xu Chuan quickly realizes this doesn't look like an ordinary accidental death. The deceased, Zhou Jianguo, had frequently visited Huai Tree Village, and a young man named Lin Hao disappeared suddenly on the very same night.
As the investigation deepens, a stone marked with strange carvings, a mysterious bronze plaque, an abandoned old river channel, and an incident buried for more than thirty years gradually come to light.
What really happened during an excavation in 1987?
Why did the people involved hide the truth?
And why did Zhou Jianguo and Lin Hao return to this old case?
More than thirty years have passed. Some people are dead, while others remain silent.
But in the end, someone has dug up the truth that was buried.