Outdoors in broad daylight, a lesbian exhibitionist sex scene unfolds without regard for onlookers. The intense, clingy dynamic promises something far beyond typical heterosexual affection. Tsugumi, a new office employee, is an analyst who hides an anal vibrator inside her company desk. One day, while staying late to work alone, she receives a sudden advance from her senior coworker Kazumi. Kazumi confesses, "I saw it, Tsugumi... what's hidden in your desk." An unexpected turn of events in their daily routine leads into a thrilling love story.