In nineteenth century London, it's not considered proper for a young lady to send flowers to a healthy, eligible young bachelor. But when Adrian Morey receives a bouquet with a challenge, he can't help but be intrigued. His curiosity only grows as the bloom induced correspondence continues and he finds himself becoming more and more fascinated by his mysterious admirer. Soon he's tearing up the city looking for her, but will his father's plans for his marriage conclude before he finds her? Annabelle Bradford has adored Adrian from afar for years and when she finally finds the nerve to tell him of her feelings, she does it in the most frivolous of ways - with a bouquet! But then, to her surprise, Adrian answers her message with another posy and before she realizes it, they're running a correspondence of petals. But what is all this talk of his betrothal?