Transferred to a new high school, Jinsuk, played by Gong Yeji (known for her roles in Shuttlecock and The Silenced) meets a friendly classmate, Eunyeong. However, Eunyeong doesn’t realize that the reason for the transfer was the result of Jinsuk getting into trouble at her previous school. When the abusive ex-husband of Eunyeong’s mother gets violent, Eunyeong and her mother flee to Jinsuk’s home. Since Jinsuk lives alone, the two feel comfortable there. But then Eunyeong’s mother steals Jinsuk’s money and disappears. Where has she gone? Can Jinsuk and Eunyeong get the money back from her? The two set out to track her down. This film is about how two high school girls’ attempt to solve a mystery as if they were detectives. However, the film doesn′t rely only on classic mystery-thriller tropes. It charms the viewer with the unique character of Jinsuk, who, behaving as she pleases, is a self-assured girl with wisdom and courage—characteristics that allow her to take on the world. (NAM Dong-chul)