ATID-663 Rio Kuriyama, a blue-collar worker, is played by a man she hates to hold back so much that her abs twitch, and she ends up wetting herself until her work clothes are soaked.

Rio, who works at a construction site, is a strong-willed woman who behaves bravely in a male-dominated society. However, Rio, who is not afraid to outdo the men, and her old-fashioned boss, Ichihara, who always tells her, "Women shouldn't tell men what to do," are always at odds with each other. Today, as always, the two clash at the construction site, but Ichihara's long-suppressed desire is ignited...