It's fiesta time in Broken Boot, Texas! And tourists are pouring into town faster than free beer at a bull roping to partake of the mouthwatering Cinco de Mayo festivities. Tex-Mex waitress Josie Callahan, her feisty abuela, Senora Mari, and even her spunky Chihuahua Lenny are polishing their folklorico dances for Saturday's big parade while Uncle Eddie is adding his own spicy event to the fiesta menu: Broken Boot's First Annual Charity Chili Cook-off. But Uncle Eddie's hopes of impressing the town council go up in smoke when cantankerous chili cook Lucky Straw is found dead in his tent. And when her beloved uncle is accused of fatal negligence, Josie, Lenny, and the steadfast Detective Lightfoot must uncover who ended the ambitious chilihead's life before another cook kicks the bucket.