Cassia Park believes in soul mates. Fated love stories. It's her family business, after all-for centuries, from Korea to Los Angeles, Park women have peered into clients' past lives to find their one true love, their fated. This magical secret is why One & Only Matchmaking has a 100% guarantee...for everyone but Cassia. For ten years, Cass has been searching for her fated, a man named Daniel Nam. But he's still nowhere to be found. And so, on the eve of her 40th birthday, Cass decides to do something for herself. She impulsively has a fling with Ellis. He's twenty-eight, indecently handsome, and not destined to be the love of her life. But she's surprised by their connection and their fling feels like something more-up to the moment he introduces her to his boss...Daniel Nam. As she battles between fate and chance, head and heart, a family secret is revealed that will make her question everything she's ever known. Cassia will have to decide if she'll follow her fate...or make her own.