ISSAC is an intense psychological thriller which constantly treads the lines of reality and fiction. Issac, A young reclusive mortician who inherited his stepfather's mortuary business meets a friendly waitress, Cassi. The two create an instant connection and after a night of terror, they pursue a revenge murder together. This film mixes a realistic story with surreal imagery, showing how one in isolation may operate due to the circumstances he has been given. Issac inevitably makes a choice and never questions the morality of his decisions.

　　Upon their mother’s death, siblings Jenny and Marshall return to renovate her crumbling motel, The Jolly Monkey. But as they work, a deadly force tied to their family’s dark past emerges, forcing them to face terrifying truths if they want to survive.

　　Luna, a cruise ship chambermaid, has to quit her job to attend to her sick brother. While doing so, she discovers that her mother has gone missing and her brother's condition is getting progressively worse. The siblings desperately sneak into an empty condo unit but soon discover that Penthouse 77 is not what it seems.

　　自幼能夠看到恐怖幽靈的八神森司（中山優馬 飾），在高中時邂逅了被神秘鬼影糾纏的后輩小歷（島崎遙香 飾）。他雖然喜歡對方，卻由于自身膽怯的性格始終無法表白。第一年沒有考上大學，經過一番努力森司如愿進入期望的高校，并且和小歷重逢。在此期間，他聽說小歷和童年好友加入了某個超自然研究會，聯想到高中的事件，森司無法對小歷放任不管，于是也硬著頭皮加入進去。這群個性滿滿的年輕人每天追蹤各類神秘事件，不久后校園內開始出現離奇現象，而小歷也成為惡靈狙擊的目標……　　本片根據第19屆日本恐怖小說大獎讀者獎獲得者櫛木理宇的同名作品改編。