The Secret Wife Exchange

Three years wed and still untouched by her husband Lee Won, noble daughter-in-law Kang Dan is given one month to conceive or he takes a new wife. Desperate, she enters Joseon Seulhwapim, a secret circle where noble couples explore their desires, and meets Ju Heon, a free-spirited scholar who sees her as a woman. Then she learns Won has long frequented it himself. At last she chooses her own life.