Shiori Tsukada's father runs a construction company that has entered the bidding process for a museum construction project, one of three companies competing for the contract. Meanwhile, Shiori plans a pre-wedding hot spring trip with her fiancé, Ichiro. Coincidentally, her father is also scheduled to visit the same hot spring for a construction union meeting. Contrary to Shiori's expectations, Ichiro becomes preoccupied with fishing and bonding with her father, leaving Shiori feeling neglected and resentful. Driven by mischief and frustration, she begins flirting provocatively with the president of one of the rival construction firms involved in the bid.