Atsushi, who was on a business trip to Hakata, was at a loss when his return flight was canceled... A flight attendant who called out to him in the lounge turned out to be Shioriho, a plain housewife from the neighborhood. They hit it off and enjoyed a night together, but Atsushi, who couldn't get a hotel room, ended up sharing a room with Shioriho, as a favor... After that, Atsushi continued to be unfaithful with her at the airport and on business trips under the pretext of business trips. His actions gradually escalated, and he began to enjoy the things he couldn't do with his wife with Shioriho instead...