Aoi, who is about to enter her second year as a nurse, has a secret: she is quietly nurturing love with Kazuma, an inpatient. Amidst this, she is caught on camera by Shingo from the neighboring ward, and is forced to comply reluctantly, being asked to serve using only her mouth while restrained. His actions gradually become more extreme, involving fellow inpatients and even doctors, pushing the boundaries to the limit. In the midst of her hazy consciousness, Aoi is confronted with a shocking truth...
