Maryann goes home to Buffalo for an uneasy reunion with her parents , and to attend a 25-year reunion of her high-school classmates - who treated her like dirt. When Maryann can't make her high school reunion, Cybill decides to pose as Maryann and go in her place. Cybill had convinced Maryann to attend her high school reunion and planned to accompany her, but when the pair returns to Maryann's home town of Buffalo, N.Y. to take on the former classmates who made Maryann's life intolerable, Maryann learns that her son - who she believed was traveling with Greenpeace - is actually living with her parents. When Maryann consequently opts to forgo the reunion to spend time with him, Cybill, not one to miss an opportunity, goes to the reunion as Maryann in order to claim sweet revenge on the classmates who made Maryann's high school experience a nightmare. Meantime, Cybill is also spearheading efforts to make Thanksgiving dinner plans.