A 21st-century female special agent transmigrates into the body of an ugly, none-too-bright princess. Before she knows it, a carefree prince has latched onto her, and she can’t shake him off.
Everyone: ... With a face like that, Prince Ning would still go for her?
The carefree prince: Got something to say behind my back? You don’t want me to pin some random crime on you and throw you in jail, do you?
To keep her from being bullied again, he gives up his carefree life and starts making plans in secret.
Little does he know that she’s even more ruthless than he is. To escape her family’s control, she schemes at every turn, fights the wicked and punishes the corrupt, and gradually unravels the mysteries around her. They support each other through it all, wanting no immortal paradise, only to be a pair of mandarin ducks together.