In a future where electronic technology permeates every aspect of human life, the ways in which people express emotions have become mechanical and indifferent, with warmth and happiness indices nearing zero. 　　 A girl and her guardian "listen" together to a highly summarized "letter" from the girl's father, after which the guardian sends the girl on her journey. Along the way, the two play, laugh, and take photos together as keepsakes. The guardian brings the girl to a massive factory filled with flickering electronic screens and cold architecture. Following the instructions in the "letter," the guardian obtains a card number for her, and then, under the arrangement of the system program, the girl sets off. 　　 The girl enters a room whose number matches her card and begins to curiously yet fearfully observe her surroundings. A voice speaks up, claiming to be the girl's grandmother. The girl turns around and sees a "monster" with an electronic brain. Through her interactions with this "monster," the girl finds this unfamiliar world increasingly terrifying. Gazing at a photo of her guardian, she sheds tears.