Uengchan was locked up in a chest and then drowned by Duenwad who misunderstood that she had an affair with her husband Kwanmueng. But in fact Uengchan had been in love with Waroon and was pregnant with his child. She then became a vengeful spirit. Years passed, Duenwad’s daughter Saimai came back to do business in the old areas of Chiang Mai with her friends. They then found a chest with Uengchan’s body inside and police came to investigate about the murder. However, the spirit was set free and Uengchan possessed Saimai to avenge. Would Uengchan kill anyone to revenge or would she forgive?