Ki-jeong, a beleaguered high school teacher, receives a phone call that the body of her younger half-sister has just been found. Her sister was a college student she had grown distant from. Though her death, by drowning, is considered a suicide by the police, that doesn't satisfy Ki-jeong, and she goes to her sister's university to find out what happened. Her sister's cell phone reveals a thicket of lies and links to a company that lures students into a virtual pyramid scheme, preying on them and their relationships. One of the contacts in the call log is Se-oh.
Like Hye-young Pyun's Shirley Jackson Award–winning novel The Hole, an immersive thriller that explores the edges of criminality, the unseen forces in our most intimate lives, and grief and debt.