A man is dissatisfied with his ambitious female boss at work. One day, he mixes an aphrodisiac into her drink. Unaware, she drinks it and begins to notice changes in her body. During overtime in a sparsely populated office at night, the man approaches the sweating woman, who is acting strangely, and kisses her. In a situation where she has to suppress her voice, she unconsciously leaks fluids. As they continue to engage in intense sexual encounters day after day, the woman begins to show changes in her own desires...