Set in 18th century Korea, this retelling of Dangerous Liaisons follows morality-deficient cousins Lady Cho (Lee Mi-Suk) and Cho-won (Bae Yong-Jun) as they scheme to ruin the lives of innocents. When Lady Cho asks Cho-won to bed her husband's lover-to-be (Lee So-yeong), Cho-won ups the ante and goes after an even more virtuous female. If he succeeds, Lady Cho must sleep with her cousin. But Cho-won begins to fall in love with his intended target.