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.

An extraordinary road to emotional healing opens up for an antisocial children's book writer and a selfless psych ward caretaker when they cross paths.

Lee Ahn has the ability to read a person's secrets as soon as he touches them. He meets a woman who has secrets that she desperately tries to hide. The two team up to bring down criminals.