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.

素熙(金施恩饰)是一名专注于职业培训教育的高中生。希望找到一份好工作的素熙，开始在分拣呼叫中心进行职业培训，但她面临着贪婪公司的巨大压力。高中生太难以承受这种局面，最终导致了她的死亡。与素熙有着共同点的刑警吴宥真(裴斗娜饰)负责此案。她开始追寻素熙的死因。本片将担任第75届戛纳电影节平行单元第61届影评人周单元闭幕片。

《Sire》是一部以韩国民间宗教 Samchil (Saire) 为背景的不祥而又奇幻的悬疑恐怖片，该宗教在 21 天内禁止他人进入，以防止婴儿出生后被非法焚烧。