Tired of his emotionally distant wife, Ippei joins a dating app for married people and meets Maki, a wife carrying the same loneliness. Their shared love of coffee brings them closer. When Maki nervously suggests a hotel, Ippei tells her they can move at their own pace. Drawn to his sincerity, she invites him home days later, slowly teasing him over coffee before the two savor their illicit relationship.