Several years after giving birth, married woman Misako suffers from changes in her body and hyperhidrosis, prompting her to join a personal gym. Her trainer, Ooki, recommends she try a herbal tea, saying it will boost her metabolism. Minutes after drinking it, Misako begins to feel strange physical sensations. Shivering from the heat and discomfort, she becomes addicted to the stimulation and returns to the gym a few days later. Under the tea's influence, she experiences intense arousal, convulsing and climaxing repeatedly in an alluring display. Misako's perfect blend of beauty and eroticism creates a truly dreamlike sight.