When the police refuse to investigate their daughter’s alleged suicide, two computer-illiterate parents decide to design a protest banner. Based on the infamous Miryang case in South Korea which shocked the nation in 2004 and continues to fuel public outrage even today.

桑格林高中的一個社團發展了一款名為「Young」的捉鬼應用，並在午夜時分於禁地舉行追悼會，喚醒了被封印的亡靈。詛咒隨之而來，這款應用程式被隨機安裝在任何擁有手機的人身上——從犯罪現場清理員、只有兩名乘客的公車上的高中生，到購買二手手機的商店店員、養老院的病人，以及剛找到公寓的女士。日常恐怖就此降臨，就在我們身邊…