"That look of enrapture, those slutty moans -- all of it. Give it all to me." Ibara Momomiya is a corporate drone who lives alone. Just as she's looking forward to a three-day weekend, on her way home from work she finds herself snatched away by the mysterious vampire, Iris. The venom from his fangs arouses her desire and she succumbs to pleasure and successive orgasms. Iris' skill at manipulation and Ibara's desire to please intertwine, and she gives up her body again and again... As three days and nights of pleasure come to an end, Ibara pursues hidden truth. What led Iris to steal her away...? 限界社畜として都内で一人暮らしをしている桃宮いばら。 明日から貴重な三連休だったが会社から帰宅途中に 正体不明の吸血鬼イリスに誘拐されてしまう。 吸血され牙から出る『毒』によって催淫セックスで 連続イキし快楽漬けになってしまういばら。 何をするにも甘やかすのが上手いイリスに社畜心が絆され、 何度も身体を許してしまい… 三日三晩に渡る快楽生活も終わりに差し掛かったころ いばらはある真実に辿り着く。 いばらを連れ去った彼の目的とはーー