该片改编自同名小说，讲述Kida、Makoto、Yochi三人同为无父无母的孤儿，他们三人相互支撑度过了幸福的少年时期，但在20岁事却以“某件事”为契机，他们的人生发生剧变。

Chan-woo, who has been studying to become a police officer for 5 years, joins his friends for dinner to ask for the money to apply for his exam and ends up getting drunk. He completely blacks out and wakes up not remembering what happened in his next door neighbor's room. Not only that, he finds a bloody corpse in the middle of the room. He hurries back to his room and tries to report the incident but he had forgotten his phone in the other room. But the door is locked and he has to resort to using a rope to swing to the next door room outside the window. Once the phone is recovered, he cannot go back because of a group of cultists who are evangelizing the neighbors in the hallway. He knows it’s the last day to apply for his exam and gets antsy as time is running out.

以黑长发女性为目标的连续杀人事件解决数月后，在同一事件现场又发现了新的身份不明的尸体。过去受过创伤的刑警·加贺谷学（千叶雄大）为了探究真相，前往自己曾经逮捕过的连续杀人狂·浦野善治（成田凌）那里。“是你杀的吗?” 面对加贺谷的询问，狱中的浦野透露了自己尊为老师的“M”这个神秘人物的存在。不久，加贺谷得知恋人松田美乃里（白石麻衣）被神秘男子盯上后做出了痛苦的选择，于是决定委托浦野协助调查……

改编自小说家安石榴的同名短篇作品，曾英庭执导。故事讲述一个不善表达情感的家庭，在儿子突然骤世后，女儿搬到外面租屋，父亲始终和颜悦色，而母亲开始在街头喂食流浪猫，让猫成为内心的支柱与动力。八年后的团圆，3人要如何走出伤痛...