Kanae divorced her husband a few years ago and is raising her only son while working part-time at a delivery company. One day, she is tasked with training Yuuki, a seemingly unreliable student working part-time. The next day, while chatting with Yuuki in the truck, he suddenly confesses his feelings to her, and Kanae can't hide her confusion! From that day on, her feminine side has been ignited, and she has been having sex with Yuuki wherever she goes.