On a night when a demon sneaks into the mansion and puts the pillars to sleep, the boundary between nightmares and good dreams blurs. The siblings notice the strange occurrence and passionately battle to return their demon-possessed sister back to human form. Within the dream world, they tremble uncontrollably with their beloved, breath ragged, cheeks flushed, sweat pouring, and arousal dripping. Surrounded by overwhelming pleasure, they climax endlessly. No matter how many demons come, they are drawn deeper into an endless, soothing slumber. A fiery tale where sibling bonds intertwine with swirling desire.