Forced to travel to America for her father's new job, Penelope left her home in Scotland, her beloved grandmother, and even her girlfriend, who promptly got engaged to someone else. Heartbroken, Penelope isn't looking forward to the weeklong journey. Or that her parents want her to find a husband in America. To make matters worse, she also has to share a cabin with a complete stranger.

Ruby Cole, her spunky Irish roommate, is unlike anyone Penelope ever met. They become fast friends as they bond over crushing family expectations and sneaking into lush parties together. That Ruby likes women, too, comes as a surprise to Penelope, but she knows their affair can only be temporary. Because as soon as the Titanic arrives in New York, Penelope will have to marry someone of her father's choosing.

Before long, though, they'll both have to decide what-and who-is really worth fighting for.