Recently, Hana, a married woman, started working part-time at a family restaurant. She looks intelligent and beautiful, but in reality, she keeps making clumsy mistakes one after another. Drawn to her, senior part-timer Maeda volunteers to become her personal trainer. After closing, the two are alone in the store, and their private training sessions continue repeatedly, with Hana steadily improving day by day. As their time together grows, the distance between her and Maeda shrinks rapidly. Her actions become increasingly bold, and even during business hours, their intimate relationship quietly unfolds in secret. A special bond has begun to blossom between Hana and Maeda, born from their workplace intimacy.