To help boost ratings for her cable cooking show, humble host Della Carmichael reluctantly agrees to enter a televised cake competition sponsored by Reggi-Mixx - even though the company's owner, Regina Davis, is an old college nemesis. When Della hears that competitive pastry making is a blood sport, she doesn't take it literally - until she finds someone drowned in a mixing bowl full of cake batter. When her dear friend's husband becomes the prime suspect, Della is determined to serve a killer some just desserts.