A man with a desire to be taken down invites his wife to shoot a "private AV" that records the couple's sex. He starts filming, but her husband doesn't get an erection... Therefore, a man who had been arranged in advance is introduced to the couple as a substitute for the husband who does not get an erection. The wife is puzzled by the proposal to replace her husband with her understudy and continue shooting, but she accepts under the conditions of "I do not do deep kisses", "I do not give fellatio", and "I pretend to have sex".
