Knock, Knock, Knock (2018)

Knock, Knock, Knock follows Hana, a young woman who confines herself to a tiny box-like room. She interacts with the world by listening through the thin walls that separate her from her neighbors. Hana is consumed by thoughts of death, only to be confronted by an unexpected death. The room itself acts as an antagonist; the limited space and sound has the power to manipulate human emotion.