The fifth and final season of That Girl leads the audience down the aisle. Ann Marie (Marlo Thomas) and Donald Hollinger (Ted Bessell) finally cement their long relationship with an engagement to wed. The ring, the cake, the family, the bridal shower....everything happens in amusing fashion this season but the wedding.

Ann Marie contines her acting career with a series of adventures including a play in St. Louis, appearing as "Miss Everything" at the "NewYork Has Everything" exhibit, playing the Friars Club and modeling at a race track - and more.