Im Yoona married the love of her life, Lee Donghae. However, his mother despised Yoona and forced her to leave Donghae and their young daughter Seohyun. Years later, Yoona returns and meets her daughter. However, Donghae's new wife, Sunye, is not willing to be pushed aside. Yoona disappears without a trace. Her twin sister, Yuri, who was adopted aboard is determined to find out what happened to her sister. She keeps up false pretenses and pretends to be Yoona.

What will happen?

Will Yuri be able to find Yoona?

Characters:

Im Yoona

- Kind-hearted and caring to everyone

- Always put people before her

- Loves Donghae and Seohyun more than anything

- Donghae's ex-wife

- Has a twin sister who lives in America

Im Yuri

- Kind and very smart

- Can be very cold sometimes

- Yoona's twin sister from America

- Cares for Yoona and will do anything to find her

- Had a heart problem when she was little

Lee Donghae

- Sweet and caring

- Always protects people he loves

- Happy with his new family but can still not forget Yoona

- Works as the vics-president of the Min's company

Min Sunye

- Works as a doctor

- Donghae's new wife

- Loves Donghae and Seohyun

- Was kind but changed after she found out about Donghae and Yoona's past

Min Nichkhun

- Sunye's older brother

- Caring and smart

- Has a bad relationship with his father

- Love interested in Yuri

Min Suzy

- Sunye and Nichkhun's little sister

- Spoiled and always makes trouble for the family

- Hates that her father always look down to her

Kim Soo Hyun

- Sweet, kind and smart

- Used to like Yoona

- His personality changed after somthing happened

Ms. Lee

- Selfish and mean to people she doesn't like

- Donghae and money is the only thing she's thinking about

- Doesn't like Yoona because she wasn't rich