After receiving ominous notes, a woman believes that an inter-dimensional being who haunted her brother and her when they were younger has come back.

A brand-new home and a fresh start await young Marie, as she unpacks her things and gradually gets used to a novel reality. Far away from the old neighbourhood and her brother, Elliot, the solitary tenant has a long way to go before she familiarises herself with the house's faint sounds and its uneasy noises--but, to be honest--those envelopes filled with persistent and creepy greetings from an unknown sender don't help much. Before long, the lonely nights will become unbearably endless, and the vague but, nonetheless, utterly real feeling of an unspeakable terror sharing the same apartment is more than enough to chill the bone to the marrow. Oh, so many fiends are living among us, and one of them is still lurking in Marie's attic. Now, should she run or should she hide?

"Johnny in the Attic" is a sequel to a short story titled "Johnny Under the Stairs".

The names Marie and Elliot are the middle names of writer/director Kyle Martellacci's siblings.