Tomari and Sawako are both turning sixty. However, Sawako is an early bird and is one grade above Tomari. One day, an alumni meeting was held at a certain community center. Tomari, who was leaving alone, called out to Sawako, who was meeting her after several decades. From a conversation reminiscing about the past, Sawako confided her troubles with her current marital relationship. Tomari listened to her consultation, but it was to get Sawako, whom she had liked since her student days. Under Tomari's scheme, Sawako is led into the world of lesbianism.