「私、最低でも一日三回はセックスしなきゃ理性が保てないの」ナース長の莉緒は、あまりにも性欲が強すぎて、並の男の手に負えるものではなかった。激務によるストレスは過酷な性的欲求に拍車をかけ、ついにはセフレですら全員去ってしまった。…落胆する莉緒、しかしここは病院。性欲の溜まった患者は沢山いる。莉緒は夜の巡回をしながら、次なるお相手を物色するのだった…。

"I can't maintain my sanity unless I have sex at least three times a day," said head nurse Rio, whose libido was so strong that it was beyond the capabilities of most men. The stress from her demanding job exacerbated her intense sexual desires, and eventually, even her casual sex partners left her. …Disappointed, Rio knew she was in a hospital. There were plenty of patients with pent-up sexual desires. Rio began her night rounds, searching for her next partner…