A love letter from the past, a classical game, usher in a bizarre cyberworld; a sea of ​​electronics, a mirror planet, a cloud of doubt behind the illusion of prosperity; a dark age, hidden for a thousand years, demons roam rampant beneath the veil of paradise; foolishness and blindness, billions of glories, for whom are the songs of the past quietly played? A flirtatious man from Zurich, holding a double PhD in geophysics from the Swiss Federal Institute of Technology; a rising star in the European piano world, living in Vienna; a gray ghost, a hacker, wandering the cybercity despite low blood sugar; a world-weary and aloof daughter of a prominent family, a high school sophomore, running away from home and exiling herself; the curtain rises on a mad era, and the believer Hearn, combing her hair, holds up a black umbrella, steps into the rain curtain of time...