100 years ago, the sisters Yod and Yard were the wives of Phra Wanathep. Yard was a loyal servant to madam Kamlai, his main wife. But Khun Thep asked Yod to help him get her sister and he would reward her. So Yod knocked her out and Wanathep raped her. Later, Yod tricks Yard into giving poison to Kamlai, to get rid of her and get Yard in trouble, so she can read morehave Khun Thep all to herself. So Yard unintentionally kills Kamlai and her 2 daughters. All the servants find out that Yard killed Kamlai so they hung her. Yod's mother finds out that she caused Yard's death so she stabbed Yod and put a curse on her, if she was to cause her mother to cry a tear again, she will never be able to get reborn.
