Natsuno Chinami, Baji Hikaru, and Noda Ayase have been inseparable since meeting in a university club. Now 27, the three friends continue to spend their days sharing drinks and playing board games, while quietly carrying their own complicated feelings about love, romance, and marriage. But when their friend Misaki suddenly runs away from her wedding, the shocking incident becomes the turning point that forces each of them to confront emotions they have long kept buried.