A man checks into a hospital rumored to have a special midnight signal: leave your underwear beside the pillow and the nurse on duty will give you a blowjob. His nurses are curvy Ayaka Hirosaki and cute, horny Mizuki Yayoi, leaving him wondering which one is behind it—or whether both are. He leaves his underwear out and pretends to sleep. During the night, a nurse finds it, pulls back the covers, and eagerly sucks his cock. Once he confirms the rumor, he pushes his luck and asks for sex—and succeeds, making him want to stay hospitalized forever.