From the Back Cover
New arrivals threaten the stability of the Kasumi House! First comes a powerful typhoon which threatens to blow everyone away, followed by Nanbara's descendant from the future who proves that some behavior is genetic. However, the most threatening arrival is a virus that may destroy the Cyberdyne Dolls! Kazuya has less than 24 hours to find the secret to May's immunity if he is to save them all!