Anna Leslie's pyrotechnic creations might light up the skies on the Fourth of July, but her research and development skills are not lighting up her private nights. Her hard-working, good-girl approach to life isn't doing much for her outside the bedroom, either. When an ultimatum from her boss pushes her out of her lab, Anna decides it's time to let loose and start creating fireworks of a more personal nature.

Jay Whitman can't believe the fiery bombshell in red is Frontier Fireworks' resident genius. He's convinced that her passion for rockets disguises a very earthy passion for the phallic, forget the symbol. To encourage her in a new line of research, he volunteers to give his body to science.

It's an offer she can't refuse, but Anna quickly realizes this is one experiment that can't be controlled or predicted. They're caught up in an attraction that defies all the laws of chemistry and physics, and Anna discovers that falling in love isn't rocket science—it's a whole lot more.