Married woman Yuki (32) harbors deep emotions, now in her fourth year of marriage. The couple married for love at first sight and once shared intense affection, but irregular schedules, lack of outings, and minimal conversation have left her in prolonged loneliness. Secretly attending a private class became her only source of comfort. Though she longs to be closer to her husband, whispering "I want to be together more...", that desire breeds deception, leading her to choose a 24-hour journey with a man other than her spouse. Her first trip in a year is not with her husband, but with a complete stranger. Throughout this trip, her emotions waver until ultimately she is embraced by another man, writhing in passion as her infidelity unfolds.