The head of an organization that plots terrorism ... I Sara. Yuki Himemiya, a secret agent, contacts Kisaki, who is in charge of the Science Department, in order to infiltrate the organization and obtain evidence of wrongdoing. Yuki helps Kisaki who is attacked by someone. Seeing Yuki's strength, Kisaki recruits Yuki to join the organization. Kisaki takes Yuki to Sara. And infiltrate the organization safely! ... However, he was told that he had to perform a ritual and drink a certain holy water in order to enter the organization. Will Sailor Agent YUKI be able to infiltrate the organization and prevent Sara Gaga's evil deeds...?! ［BAD END］