Childhood friends Miku and Kota were naive enough to realize their feelings for each other, but had never kissed. On a trekking trip, they confess their feelings to each other and decide to go out together. However, perhaps because they were too excited, they lost their way... and ended up at a guest house. There, they find a nest of devilish men who pretend to take care of women in distress, and then take them in a circle. Miku, who is soon driven insane by the lowly men who come to the inn one after another, carries a child in her belly that she does not even know whose seed it is....