The second part of the Black Shop series, the first part is "The Song of Lun Yuan" and the second part is "The Lost Ring".
"The Lost Ring": It tells the story of the companions of the black shop who received their rewards after successfully completing the task of reincarnating Qing'er and Rou'er. The witch got the formula of the love-forgetting water she dreamed of, but after drinking it, she even forgot about her son. The companions tried to remind her of her son, but found that she did not even dare to face her past. In order for her to live happily again, the companions worked with her to find her past. What is the witch's past like? What happened that made her so eager to get the love-making water? Can she succeed?