The city is calm while everybody is out for the Thanksgiving day(Full Moon Day) and 19 year-old O-yoon Kwon is getting nervous. It´s because she has lost her beloved IPod just days before her SAT test. With the help of her friends, O-yoon plans to catch the thief by searching the reading room. On this celebrating day, the girls are in need of a victim to soothe their anxiety.

수능시험을 얼마 남기지 않고 찾아온 추석 연휴, 열아홉 살 권오윤은 도둑맞은 물건을 찾기 위해 친구들과 함께 빈 독서실을 뒤지기로 한다.