For generations, two noble families have clashed like mortal enemies.
Then the king issued a command:

“The two families will join in marriage and end their long-standing feud.”

Joo Ha-yeong, the youngest daughter of the Joo family:
— “Do you think I like this? I dislike you just as much.”

Yeon Mu-eun, the second son of the Yeon family:
— “I’d rather die than marry into the Joo family.”

Their wedding night passes with both judging each other based only on rumors and misunderstandings.
But as time goes on, their hearts begin to change.