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Jung Yi Hyun, a genius, tries to get her mother's money back from a scammer. Hong Kyung Doo, having the same motive, needs the money to save his mother's life. Yi Hyun meets her biological father. Ten years later, she wakes up on the sidewalk and is unable to recall her past memories...

Kyung Doo looks for missing Yi Hyun. Meanwhile, Yi Hyun traces her steps back and tries to remember everything...

Yi Hyun, unable to recall her past, returns to the Yega Group household, whose members believe she is putting on an act. Meanwhile, Kyung Doo continues his search for Yi Hyun.

Kyung Doo finds Yi Hyun but is shocked when she says she doesn't remember what happened between them.

Kyung Doo confronts Yi Hyun once more. Kyung Doo is scammed again. Things stir up in the Yega Group household...

Yi Hyun and Kyung Doo meet in Jeju Island. Yi Hyun gets closer to her daughter, Hae Deum, as she tries to remember her past...

Yi Hyun and Kyung Doo look for missing Hae Deum. Kyung Doo meets, Choi Gook, Yi Hyun's father.

Yi Hyun's cousin, Ki Tae finds out about Kyung Doo and Hae Deum. Sun Young gets hired at Yega Company. Yi Hyun begins to regain her memories.

Things get heated up as Yi Hyun and Kyung Doo decide who Hae Deum will be staying with.

Hae Deum goes to live with Yi Hyun but ends up missing and crying over her dad.

Yi Hyun finds out what really happened between her and her father, Choi Gook.

The Yega Household finds out Yi Hyun's father, Choi Gook, is alive. They try to take custody of Hae Deum...

Sun Young confesses to Yi Hyun about what really went on in the past. Unable to stand the Yega Household, Yi Hyun leaves with Hae Deum.

Kyung Doo visits Yi Hyun after finding out she is ill. Yeon Jung confronts Yi Hyun and tells her how she truly feels about Kyung Doo...

Yi Hyun meets Choi Gook. He and Yi Hyun's uncle have a talk. The truth behind Yega Company is slowly unveiled.

Yi Hyun finds out the truth about Yega Group and how it was established. Kyung Doo faces an unexpected situation. Sun Young decides to call it quits with her husband, Ki Tae.

Yi Hyun and Kyung Doo meet to go to Hae Deum. Yi Hyun remembers what really happened in the past. She leaves her family once again to bring an end to it all.

Yi Hyun is questioned by a prosecutor, but her aunt tries to keep her from telling the truth. Yi Hyun's uncle, Choi Suk. goes to meet his older brother, Choi Gook after many years.