Tidings of comfort and joy gladden this Christmas episode, which, true to the series, also has its share of heartaches and crises. The main storyline centers on the holiday hopes of principal Harper's teenage daughter, Brooke, who's anxious for a reconciliation between her divorced mom and dad. In other developments, Guber and Mrs. Peters shop together for a special Christmas present; Marylin, Marla and Louisa form a musical trio at the school pageant; and Senate gets caught up in the plight of a sensitive youth who he thinks may be suicidal.