Running a billion-dollar software company is all Zephyr Calderon has ever known. He's powerful, driven, and accustomed to getting exactly what he wants. When he's forced to keep his late brother's best friend, Harper, on the payroll, he sees her as a painful reminder of the past. Their relationship is a mix of animosity and a grudging understanding.

But when a shadowy figure from the city's underworld threatens to destroy everything Zephyr has built, he and Harper are thrown into a dangerous game of cat and mouse. As they navigate a web of corporate espionage, blackmail, and murder, the line between enemy and ally blurs. The animosity that once defined them ignites into a passion neither can deny.

Will they uncover the truth and clear their names before it's too late? Or will the secrets of the past and the dangers of the present tear them apart forever?