The legitimate daughter, cast aside by her family like a worn-out shoe, is forced by imperial decree to marry a crippled prince whom everyone else avoids.
Everyone laughs at her for courting death, waiting to see her meet a miserable end.
But on their wedding night, the prince pins her against a wall, his gaze dark and intense.
"Your Highness, long time no see."
She realizes that this seemingly frail prince is neither crippled nor mute. He dotes on her, helps her crush her enemies, and wields power over the entire court.
From then on, the legitimate daughter rises to the top, the prince gives her his undivided devotion, and the whole realm makes way for her.