Yoo Mi is the woman who tells a small lie and ends up living the life of someone else. Hyun Joo is a woman who thinks she is better than everyone else and treats them with neither kindness nor cruelty. Her relationship with Yoo Mi is slightly tense. Yoo Mi's husband, Ji Hoon, is ambitious and focused on the future. Yoo Mi only trusts Ji Won, a senior who can be counted on.