Owners Jim Brush and Alison Sloat run Key West Key Lime Pie Company, a pie company that is a true rags-to-riches culinary story. Buying the business, recipes and all, for merely $1200, they have grown it from selling pies on the side of the road to being named the "Nation's Best Pie" by the American Pie Council. Even though the business grosses an impressive $1.4 million a year, they are not turning a profit. With multiple storefronts and a shipping facility that's not bringing in any money, can serial entrepreneur Marcus Lemonis help this couple get back on track and get their piece of the pie?