Mizuho Saeki, an insurance saleswoman, struggles to secure contracts and is sternly told by her boss: "Don't come back to the office until you close a deal." While visiting a potential client, she becomes so engrossed in her sales pitch that she loses track of time and realizes it's already night. Recalling her boss's harsh words, Mizuho makes the bold decision to stay overnight at the client's house and launch an aggressive, seductive campaign to close the sale. What consequences will this daring choice bring?