Married woman Yuka Riki (28 years old). Troubled in her marriage, she embarks on a two-day, one-night trip with a man she's just met. It's her second year of marriage, and she has no children yet. Her husband is a seven-year-older coworker and senior at work, whom she met at a marriage-hunting party. At the time, he seemed cheerful and like a perfect gentleman—impressing her, as she had little dating experience. Her mother-in-law had desperately wished for her son to marry, and upon her sudden hospitalization, Yuka felt pressured to bring her peace of mind, leading them to marry after only six months of dating. However, soon after starting their new life, her husband's true nature surfaced. Though she tried hard to change him, after one full year, nothing had improved. Seeking a change of pace, she goes on a trip—and shares a deeply stirring encounter with a complete stranger.