45-year-old Kimiko, a divorced mother of one, stands at the midpoint of her life. Seeking to confront her past self, she embarks on a journey. A spin-off from director Hirokazu Takahashi's married woman's affair travel series. Her family consisted of five members: a busy father, a traditional mother, an older sister, and a younger brother. As a child, she was so energetic that people often mistook her for a boy. Though she became more reserved after her first love in middle school, her three-year unrequited crush finally blossomed just before graduation—only to end as a fleeting romance. After high school, she worked as a bus guide before marrying at 23 while employed at a department store. She quickly became a mother, but her marriage didn't last due to her husband's intense jealousy and possessiveness, ultimately losing custody of her child after the divorce. Fifteen years later, facing a turning point in life, she sets out on a trip to reflect on her past.