The year is 1991 and South Korea is preoccupied with its first democratic elections in 30 years. But in a village in Daegu, 5 fathers are facing their worst nightmare. Five young boys go on a hike in the mountains. They never return.

At first, the media is too caught up with the elections to cover this as news, and the local police treats it as a runaway case – until it attracts attention on a TV show. Soon the “frog boys” become national news. But with no credible leads, the mystery remains.

A decade later, the boys’ bodies are found near a military shooting range. But to this day, the case has never been fully investigated. At its heart, this is the story of 5 heartbroken parents and their missing children. But it also tells the wider story of societal changes over 3 decades.