Song Yu is the palace maid who attends the Third Prince personally.
Only she knows that she is the Third Prince's biological older sister. And the Third Prince is not of royal blood either.
One person learns their secret.
When they first meet, she holds an umbrella over Mo Ziheng and leaves him a handkerchief.
Unbeknownst to her, the faint, delicate fragrance about her becomes etched in Mo Ziheng's heart from that day on.
Later, when she has arranged a promising future and a good marriage for herself, with only her departure from the palace left to go,
Mo Ziheng intercepts her at the palace gates and takes her back behind the red walls and green-tiled roofs.
Back by his side, threatened by the secret he holds, she glares at him furiously.
"I lost this round."
Mo Ziheng had thought he would never experience the feeling of getting back what he had lost a second time in his life. But then he found the residence he had prepared for her completely empty.
He searched for her for two years.
When they meet again, she is standing beside another man, smiling brightly.
Theme: Love yourself.