When they meet as girls on a beach in Nantucket, Maggie McIntyre and Emily Porter become fast friends--though Emily's well-heeled mother would prefer that she associate with the upscale daughters of bankers and statesmen rather than a child of the local seamstress. Even as Emily falls for Maggie's brother, Ben, and the young women's paths diverge, the duo remain close friends. Then the unthinkable happens: a lifelong friendship is pushed to its breaking point with the appearance of the handsome, charismatic, charming, and incredibly sexy Wall Street trader Cameron Chadwick--upending both of their lives.