A female supervisor and her virgin subordinate get caught in a record-breaking downpour during a business trip, forcing them to stay overnight. However, the only available room is one. The supervisor, Amamiya, thinks it's fine because her subordinate, Takahashi, isn't very manly and isn't used to women, so they decide to share a room. But when she provokes him by saying he's still a virgin because he's not manly enough, he suddenly attacks... The female supervisor with the best looks and erotic techniques, who accepts everything and has a big-sisterly personality, and the subordinate who can't stop getting hard, have sex that is too erotic.
