Hina is anxious about her sex life with her husband, who is going through a rough patch. Worried about losing focus on reality, she buries herself in work. Then, her colleague, Yuta, invites her to his home, where he suddenly confesses his feelings to her. Although she should immediately say no, a certain anticipation arises in Hina's heart. Weighing her unsuccessful sex life against Yuta's pure and passionate love, Hina makes a mistake and spends a night with him…