Accident-prone Arnold is so big and awkward that when accidents happen, they happen big. When Carol asks him over for Christmas Eve, her family is in a panic, not knowing whether their liability insurance will cover everything. His run-in with Miss Gertrude, the choir director, and her carolers brings misery to all. Dianne and Carol get their heads together along with Jack and decide that Constance, a psychology major, is the answer. She helps Arnold - until he happily gets into his car. Laugh your way into the Christmas spirit with this one!