Na Ah Jeong works as an extra actress. She's talented as an actress, but she has not been recognized for her work at all. She has experience acting as a married woman, but in real life, her dating life is on the back burner due to her difficult reality. She has a male friend named Lee Do Han, whom she has known for 15 years.

Do Han is the son of a chaebol family that runs the LJ Group. He is pushed to get married by his family, but he has a secret that he can't marry. Do Han turns to his friend Ah Jeong and asks if she would act like his wife and daughter-in-law of his family. She accepts the offer and prepares to play the first leading role in her life as Do Han's wife.

At that time, she has an unexpected disrupter. That person is Lee Ji Han, who is Do Han’s younger brother. Ji Han has ambitions to make his older brother, Do Han, the successor of the LJ Group. Ji Han works hard to achieve his goal, but his plan is disrupted by his brother's sudden wedding announcement. Ji Han now tries to prevent his brother's wedding and he brings Yoon Chae Won into the picture as his brother's potential bride.