A bidding process was held among three construction companies for a museum's construction project. One of them was the construction company run by Shiori's father. Today, Shiori is on a hot spring trip with her fiancé Ichiro as a pre-wedding getaway. Meanwhile, Shiori's father also has to go to the same hot spring for an association meeting. Despite it being a rare hot spring trip, Ichiro spends all his time fishing with his future father-in-law. Frustrated and horny, Shiori starts flirting with the president of one of the competing construction companies.
