Hayami Yuuna is a member of the wind instruments club and adores her senpai, Kanzaki Ayane who is also in the same club. Yuuna becomes concerned when Ayane hasn’t been showing up to club meetings and while following her one day after PE, she is shocked to see her beloved senpai having sex with several male students! In trying to help Ayane, who has been blackmailed in to sex, Yuuna also finds herself falling in to an endless cycle of pleasure and sex...