Jack Sadelstein, a successful advertising executive in Los Angeles with a beautiful wife and kids, dreads one event each year: the Thanksgiving visit of his twin sister Jill. Jill's neediness and passive-aggressiveness is maddening to Jack, turning his normally tranquil life upside down. Family guy, Jack Sadelstein, prepares for the annual event he always dreads--the Thanksgiving visit of his fraternal twin sister, the needy, and passive-aggressive Jill, who then refuses to leave.