Due to a certain incident, Seishin School's female teacher Koi Yamaguchi has been forced to have a sexual relationship with the board of directors only son, Masahiko. You go to the same school as Masahiko and are in the film club. Masahiko requests you to film one of these trysts for him. During the middle of the filming, you are enchanted by Koi's seductive ways and you being to have questions regarding the relationship that the two have. Will you be able to help Koi escape from the lusty trap which she has found herself caught up in?