At just 20 years old, Ayasumi makes a dramatic debut in the world of adult entertainment. In her quest to find her childhood friend Mai, she relentlessly visits lesbian establishments. However, after spending too much time and money on these outings, Ayasumi finds herself in financial trouble. By chance, she ends up living and working part-time at the home of her junior from university, Nanakura. Yet, Ayasumi's visits to the lesbian establishments show no signs of stopping...