Koji is still in hot love with his wife, Chisato, but lately he's been getting impatient because he hasn't been able to do anything about it. Not wanting to be abandoned by Chisato, Koji decides to resort to aphrodisiacs. However, in Koji's absence, Chisato and his son accidentally drink an aphrodisiac drink. The back of her vagina aching even though she hadn't even touched it, and the meat rod that towered high into the sky. Swept away by the heat rushing through their bodies, the two gradually embark on a forbidden relationship.