Gyeong-ah works as a caregiver and lives alone. The only one she can rely on is her daughter, Yeon-su, but it's hard to see her after she moved out on her own. Meanwhile, Yeon-su, who is suffering from her ex-boyfriend, Sang-hyun, argues with him again and visits her mother’s house. After Yeon-su left, Gyeong-ah receives a shocking message from a stranger.。西村由于拆迁需要,聘请了一位外地老师担任拆迁协调员,在协调过程中,村中有几户村民不满拆迁调解,却被强拆。几户村民愤怒之下决定联手给协调员一次教训,不料却失手杀死了老师及其女儿,而后一年中,这几位村民接二连三遇害,经过警方的努力,终于抓到了凶手。。