Her One-Night Prince is a Cinderella story about a woman's dream to be something she's not for just one night at her class reunion. As all fairy tales go, however, happy endings don't come easily. Shy and sheltered Lydia St. Clair is uncomfortable around men, so she advertises for a gay man to be her date and revamp her style. Mitch Gannon answers Lydia's ad, and he's perfect for the job--he's handsome and, even more important, he's charming. Unbeknownst to Lydia, Mitch is straight and answered the ad as the unwitting victim of a practical joke. Before he can reveal the truth, Lydia is convinced he's her fairy godmother, ready to transform her into the belle of the ball. And Mitch, prince that he is, doesn't have the heart to set her straight.

It’s a classic case of mistaken identity. But this time, it’s no mistake.

Plans go hilariously and seductively awry when mild-mannered Audrey Thompson dresses as Ava, her flamboyant but cowardly twin. It is Audrey's task, as Ava, to break up with Ava's fiancé, Zach Banister. However, as Audrey is stuffing her bra and tottering around in her sister's stilettos, she falls for Zach instead. Little does she know Zach has an agenda all his own.