The lovely young Philomena Mansford, in order not to ruin the brilliant marriage plans of her older sister, is forced to appear at her fiancé's country estate under the guise of... her own mother's companion! But fate has its own whims. Staying in the shadows, the girl accidentally meets an attractive stranger, whom she naively mistakes for a jockey. However, the one to whom Philomena gave her heart is, in reality, as poor as her companion...