Oh, clumsy Karin - will she ever do anything right? At least when she spills a plateful of food at the restaurant, it leads to a lucrative summer job for both her and Kenta. And it seems like it will be a fun position, as that, as her young charge really wants Karin to act more like a playmate and a dress-up doll than as a maid! But Karin can't enjoy herself - not only is her bloodlust acting up, but mysterious occurrences are making her question the motives of her employers. When the other two maids disappear, Karin worries she may be next!