Nonoha has a good relationship with her husband's stepchild and is satisfied with their happy home environment. However, her husband has recently been suffering from erectile dysfunction and has been refusing to pay attention to her, which worries her. Nonoha used to work for a pharmaceutical company before her marriage, but one day she starts making a "motivational aphrodisiac drink" at home. She ends up making a drink so strong that the smell alone makes her aroused, but her stepchild accidentally drinks it all in one gulp. Nonoha, the stepmother, loses her sanity when she sees her stepchild's rock-hard cock, which now has a male face...