Wife Mio (28 years old). In her second year of marriage, she struggles with her relationship, loving her husband yet tormented inside. Her husband is a 17-year-older man with a previous marriage; he actively pursued her, leading to marriage a year later. But upon discovering his diary, Mio is shocked by his writings about his past marriage—how differences in views on children led to its collapse. Wanting children herself, Mio grows anxious about her husband's true feelings. Does he still desire kids? Carrying this burden, Mio embarks on a trip where, in the arms of a stranger, she's overwhelmed by uncontrollable emotions. A two-day, one-night journey where her duties as a wife clash with a new, unexpected connection. While torn over her marriage, she awakens to new desires—her fleeting impulse leaving a deep mark on her heart.