When an esteemed professor of Louisiana history is found face down in a King Cake, young detective Annie Fournier suspects foul play and begins an investigation to find the person responsible. Her partner has little patience for Annie's inexperience or gender and seems to enjoy mocking her at every opportunity. And to top that off, the crazy melee of Mardi Gras seems to hamper their progress at every turn. Will they weigh in on the identity of the murderer before Fat Tuesday ends, and will Annie prove that she has what it takes to be a detective?