Raised by her stepmother and two greedy stepsisters, Isabelle Montgomery would be lost without her brother and best friend, Miles. When Miles leaves the estate to seek his fortune, Isabelle is left to fend for herself with only her imaginary friend, Giselle, for company. Before leaving, Miles appointed John Saint-Germaine as Isabelle's guardian, ushering in heartwarming romance for his sister and the Prince Charming of her dreams.