Yoo Ga Eun is a sweet-natured girl who dated and subsequently married her boyfriend, Park Jung Woo. However, she later discovers that her husband had an affair with her best friend, Mi Ran, and that their adopted daughter is actually Jung Woo and Mi Ran's lovechild. To get revenge on them, she marries Maeng Ho Geol, a wealthy clothing retailer, and carefully plots their downfall. At the same time, Ga Eun also meets Ha Jae Bum, the man who falls deeply in love with her and promises to support her by her side, no matter what she does.

中韩将联合拍摄《奶酪陷阱》电影版，剧版男主角“徐正”朴海镇、“白仁浩”徐康俊均已收到出演邀请，朴海镇表示如果是漫画原作者参与则愿意出演。剧版女主角“洪雪”金高银、“白仁荷”李圣经则未接到出演邀请。