The Ayanagi Police is preparing for the annual "Chief for a Day" in which a famous idol is police chief for a day to lecture about the dangers of drunk driving. However, the idol scheduled to show up is unable to make it, but by an odd stroke of luck, Ito and Narasaki are able to convince Megumi and Kanaru to be the chiefs for the event. Meanwhile, Ryo, after responding to a fake Reverse incident, ends up in a bear suit and passing out balloons to children...