[Machine Translation] Agatha takes one look at the man on the village festival staff and likes him, and decides to do her best to publicize the festival. Using her network of contacts, she invites a top artist to a mere village festival and succeeds in attracting an unbelievable number of visitors. The village festival is more crowded than ever before, and they can't stop laughing at the huge profits they make... But then an incident occurs during a contest for homemade jam! One after another, customers who tasted the jam began to behave abnormally, and finally four people died. It was obvious that something had gotten into the jam. But the investigation was a daunting task, as thousands of customers whom Agatha had brought in had the opportunity to commit the crime. Agatha is cynically treated by the police, and instead of being thanked by the villagers, they look at her with a cold shoulder...?