Akane Tsuda, a 28-year-old office lady working in the planning department of a major electronics manufacturer, is dedicated to her job. In a moment of drunken impulse and loneliness, she ends up purchasing a sex android named Nadeshiko. As Akane begins to adjust to life with Nadeshiko, she starts to seriously consider the master certification. Just then, her younger childhood friend Jun arrives. Jun, who has had feelings for Akane since they were kids, is confronted by Nadeshiko, who declares, "I am the fiancée." A single office lady and her android, the risqué cohabitation life of the two (?) begins!