Yumi, who was dumped by her fuck buddy due to her overly strong sex drive. Takuya, who possesses an extraordinary sex drive. These two meet and have sex. Both are confident in their own sex drives and engage in a battle for dominance, but Yumi ends up losing. 'How can I win...' Seeing Yumi troubled, Takuya's mother gives her the secret potion that is the source of sexual desire. Hesitantly, she drinks it, and her body grows hotter, becoming increasingly lewd. Now the conditions are equal. Revenge begins.
