"My name is Song Gi-Tae. I’m 20 years old. That’s all I remember."

Gi-Tae wakes up in a windowless room, with no memory of how he got there—only the steady rhythm of three meals a day delivered by the ever-gentle Cha Ji-Hun to hint at the passage of time. No matter how cold or cutting Gi-Tae becomes, Ji-Hun only responds with warm s...