Around the construction of a certain art museum, bidding is taking place among three construction companies. One of them is the construction company managed by Shiori's father. Today, Shiori is on a pre-wedding hot spring trip with her fiancé, Ichiro. Also, Shiori's father is going to the same hot spring for a meeting of the construction union. Despite it being a special hot spring trip, Shiori's fiancé Ichiro is spending his time fishing with his future father-in-law. Frustrated with her pent-up desires, Shiori flirts with the president of a competing construction company.