College student Konishi's part-time job at a convenience store has him sharing shifts with Ikka, a housewife who recently started working there. Konishi is drawn to the unconscious eroticism of slender and beautiful Ikka and invites her out for drinks. Ikka's husband, who works remotely, has seen his income drop, so he relies on Ikka's part-time earnings to make ends meet. Additionally, Ikka knows that her husband is cheating with another woman and she herself is sexually frustrated. The two secretly seek exciting encounters and empathize with each other, leading them to 'just once...' and commit an error.
