When Mom and Dad and their twelve-year-old twin boys headed over to grandma's house for Thanksgiving dinner, they discovered that a roast turkey wasn't the only cadaver awaiting them. It seems Great Aunt Thelma passed away even before sampling Aunt Susan's crab dip. While the guests try to figure out how to deal with this situation, the twins' comical irreverence and Mom's weary exasperation lighten the mood.