After fleeing DC following an intense one-night stand that left her reeling, biotech company heiress Mia Moncure has devoted every waking hour to working with a humanitarian aid team in Haiti. When the United States is threatened with a flu epidemic, she is forced to return home to unveil a new vaccine. But when the company’s PR Director dies in a suspicious accident in Switzerland, Mia soon realizes there is a murderer in their midst.

Determined to seek justice and reveal the killer, Mia heads to Switzerland. But she quickly becomes a target when she uncovers a conspiracy to sabotage the vaccine. Desperate for backup, she has no choice but to turn to sexy Gio Lorenzo, the one-night stand she can’t forget. Millions of people are being vaccinated, and Mia and Gio soon discover there’s more than her family’s legacy at stake. While struggling with their stormy relationship, they race to expose the deadly scheme, but it just might be too late.