A harried mother thinks her 13-year-old daughter's life is a bed of roses. The daughter is similarily envious of her mother. Each wishes she could trade places with the other, and miraculously, one freaky Friday they exchange bodies. While Mom is experiencing the hilarious horrors of junior high school, the teenager is finding out what it's like to be an overburdened wife and mother. Both are glad to see the end of that day.