The film will follow Princess Songhwa, who refuses her fate to marry one of four suitors. While Seo Do-yoon, skilled at interpreting marital harmony signs is selected as the person to ascertain her best match.

Shy Ji-hae's friend is having problems expressing her feelings to the boy she loves, so she asks Ji-hae to write e-mails to him in her name. As the boy falls in love with her letters, Ji-hae discovers the story of her mother's romance which is remarkably similar to her own circumstances.