Do Kyung is forced to go to Jinyang-gun county office for voluntary work. At the county office, there are the governor and citizens gathered to have a discussion about the black rain and come up with a solution for those who are suffering from the damage by the black rain. Yong Ju, who bullies Do Kyung, also comes to the county office. However, people suddenly start to go mad and violent, and chaos is brought to the county office.