A Tale of Two Sisters

Something strange is happening when Su-mi and her younger sister, Su-yeon, come home to their fathers large but dark and somewhat foreboding house after a stay in the hospital. Their dad is taciturn and burdened, and their stepmother, Eun-joo, greets them with forced enthusiasm and more than a little sense of irritation. But thats nothing compared to what happens when bedtime rolls around. (official distributor synopsis)