The film focuses on the reasons that led to the purge plan. It tells the story of how, due to population expansion and intensified social problems, an organization called New Founding Fathers of America conducted a sociological theory test, which involved venting, attacking, and aggressing in an isolated community for one night, leading to mutual slaughter among the people in the community. This system was promoted throughout the United States, and for a time, the streets became battlefields for killing. The absurdity of the story attracted a large number of viewers. The first year of the killing day was about to come, and the demons were ready.