It has been a year since Misako became Yosuke Amamiya's wife, but her new stepson Kazuhiko is still barely acknowledging her, let alone seeing her as a mother figure. However, there is a more pressing matter on her mind: when she is alone at home, she frequently receives menacing calls from a stranger possessing detailed knowledge of her day-to-day life. Unable to bring this issue up with.. On the outside, it seems as if the Amamiya family of Enbo is a picture of happiness and stability; Yosuke is a successful businessman, having recently been remarried to a beautiful wife named Misako. Their son, Kazuhiko, is in college. But for Misako, things aren't so fine and dandy: Kazuhiko is cold and distant toward his stepmother; the workaholic that is Yosuke doesn't satisfy his wife in.
Kazuhiko's father has just recently married a beautiful young woman named Misako and he dreams of his new mother all the time. While Yosuke, his father, has remained cool to her and her needs, Misako has been getting lewd calls and gifts of sex toys from that same person. Soon, unable to hold herself back, Misako finds herself trapped within Kazuhiko's power and willingly places all of her.. Misako Amamiya es una joven y bella ama de casa que vive con su esposo, Yosuke Amamiya, con el cual se casó hace un año, y su hijastro, Kazuhiko, quien no la trata con mucho afecto. Aunque Misako intenta llevar una vida ordinaria como ama de casa, su insatisfacción sexual se lo impide, pero un día, con una simple llamada telefónica anónima, la vida de Misako cambiará drásticamente.