The day Shen Zhaoning receives her betrothal decree, she's still arguing with a chicken. Her intended is the sickly marquis next door, a man she's never even seen. She sneaks over the wall at midnight to take a peek and gets caught red-handed. The man looks so handsome in the moonlight that she swallows the words “run away from the wedding” on the spot.
After they marry, she discovers that although he looks frail, he's full of tricks. She thought marrying a walking medicine jar would make him easy to handle, but he turns the tables on her every day. When she climbs walls, he brings a ladder. When she gets into trouble, he cleans up after her. When she says she's going to run away, he smiles and locks the door.
At first, things are so sweet that she thinks she's the heroine of a romance. Only later does she realize he's a wolf in sheep's clothing, and she's the fool who fell head over heels for him.