Yoo Mi is the woman who tells a small lie and ends up living someone else’s life. Hyun Joo is a woman who lives her life holding herself above everyone, treating them with neither kindness nor malice. She has a subtly tense relationship with Yoo Mi. Ji Hoon is Yoo Mi’s husband who is ambitious and future-oriented. Ji Won is a dependable senior who is the only person whom Yoo Mi trusts. (Source: Naver) ~~ Adapted from the novel "Chinmilhan Ibangin" (친밀한 이방인) by Jung Han Ah (정한아).