Married woman Eimi (33 years old). Three years into marriage, no children. Her husband is her high school classmate and former band club member. Eimi has been active in music since childhood, and alongside housework, she tirelessly attends orchestra rehearsals and performances. Due to her husband's job requiring him to wake up at 3 a.m. and leave before dawn, their lives run on different schedules, yet their relationship remains strong, with marital intimacy occurring once a week. She cherishes her husband, her music, and dreams of having a child. This story follows her emotional turmoil as she embarks on a one-night, two-day trip with a man she's never met before, blurring the lines between fantasy and reality. The encounter on this journey stirs new emotions within her. Torn between her duties as a wife and her personal desires, she finds herself succumbing to the stranger's embrace. The intense 24-hour journey leaves an indelible mark on her heart.