Rika Narushima, president of Blueberry, a mail-order luxury imported lingerie company boasting annual sales of 19.8 billion yen, receives a call from a man. The man tells Rika that he has acquired 35% of Blueberry's unlisted stock. Since Blueberry is unlisted, there's no way a third party could acquire such stock, so Rika ignores the offer at first, but a terrifying trap is waiting for her...