[1][2] It made its world premiere at the 2012 Busan International Film Festival, and was released in theaters on April 18, 2013.

[3][4] Written and directed by Lee Ji-seung,[5][6] the movie's English title is a transliteration of the Korean term "ajumma" (아줌마), a form of address used for married (or simply older) women that has complex connotations and by which Jang's character is always called.

Ten-year-old Yeon-joo (Lee Jae-hee) is picked up outside school by a man (Hwang Tae-kwang) who says he knows her mother and is then driven to a flat where she is sexually abused.

Angry at the apparent slowness with which the police are treating the case, Yoon tracks down the child molester herself and confronts him at his flat.

After a struggle and chase, the police arrive and take both of them in, though en route the child molester escapes.