Midori is in her late twenties and still loves her childhood friend Shiratori, who she was separated from when they transferred schools. She has never forgotten the promise they made to each other to get married when they grow up. Now she has no boyfriend and spends her days drinking profusely, but Shiratori, who has just returned from America, appears at the real estate agency where she works. They have a miraculous reunion, and the distance between them shrinks in an instant...!