Warnruk, a female investigator, gets transferred to her small hometown in order to investigate the homicide of Chankrapor, who was murdered and buried underneath a Chan por tree. There she meets the forensics doctor of the area, who although likes to question her intelligence, also teams up with her in order to find the murderer. Together with them is Trichai, a young and handsome lieutenant, who is always ready to help. However, the catch of this case is that the deeper you search, the thicker the fog becomes.