Yotsuha is a new female employee who has just graduated from university. Excited to go on her first business trip with her boss, whom she has always secretly loved, Yotsuha feels very thrilled. After finishing work, both of them return to their lodging only to discover there is only one room. It turns out that Yotsuha intentionally booked just one room to be able to stay with her boss. While the boss is soaking in the hot tub, Yotsuha walks in naked, making him very confused. Under Yotsuha's seduction, the boss ultimately could not resist and enjoyed a sexual pleasure with her...