Four years after the Unknown virus epidemic seemed contained, Wataru Ayase and his family and friends savor a fragile calm in Tokyo, the Tohoku outbreak now a fading memory. Yet the pathogen awakens, plunging the capital into chaos and sealing them inside a nightmarish city. A devoted maid moves through the frenzy with teasing caresses, from a lingering boob job to an intimate blow job, while the streets pulse with hidden public sex that blurs survival and temptation in this hentai descent.