A young girl escapes from a mysterious laboratory after a violent incident that leaves many dead. Two members that run the lab, Dr. Baek and Mr. Choi, considered her dead. The girl collapses on a farm, where she is discovered by the owner, Mr. and Mrs. Goo. His wife nurses the girl back to health and adopts her. 10 years later, the girl, named Ja-yoon, is living a normal life without any memory of her past.
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