Five years after being cast out by her powerful mother-in-law, Luna has raised her son Neo on her own. When Neo's leukemia requires a marrow transplant, she is forced back into the orbit of Ken, her former love and a celebrated surgeon. Concealing who she is, Luna accepts a difficult deal to save her child. But Ken's mother Ellen and his fiancée Tina plot to destroy her, leading to heartbreak and exile in France. As Ken uncovers the betrayal, he fights to clear Luna's name and bring his family back together.