When Lady Joanna Sinclair meets Lady Diana March, on horseback and clad in male attire, she is outraged by such bizarre and unacceptable behavior. Still, she is irresistibly drawn to the headstrong Diana, under whose influence she asserts her independence from her arrogant and overbearing brother, Hugo. But in England's regency period, to love one's own sex was a risk taken only by the most daring.