A chick has revenge lesbian sex with her old high school buddy when she discovers that her boyfriend is cheating on her.
Takako is a freelance cameraman and Yuuko works part-time at a design company in Yokohama. They are neighbors and they both have spouses. They bump hard into each other in the street and they often meet in the elevator. They begin to know each other and finally fall in love. Since then, they have become lovers and begin meeting in secret.