High-pitched footsteps echoing in the late-night ward Inside the softly closing door, with her reward tucked away in her pocket, "Akane Misuzu" skillfully wields an exposed dick... On such days when Misuzu is on duty, an emergency call is highly likely to come in Her colleagues, "Sohama Rika" and "Nakamaru Mie", begin to suspect something amiss in such situations... During a night shift where they were scheduled to work together Rika leaves Shinichi, her fiancé and the doctor on call, behind to follow Misuzu, who has gone on her rounds. The destination that Misuzu, who walks down the deserted corridor, arrives at, is a private room where Mie's fiancé was suddenly admitted due to an illness. What Rika sees through that door is...