It happened in a village without a name, deep in the forest.
"Never walk toward the sound of the whistle."
Those were the words Jack's brother left behind before he went missing, along with half of the village's children on the night of the harvest festival. Jack spent the past 7 years of his life without understanding the true meaning of these words, and now the harvest festival season is about to begin again.
As the date draws closer, Jack grows increasingly anxious, afraid of losing another important person in his life. Then on the night of the festival, another tragedy strikes, one that gives him a clue about what happened to his brother that night.
