On their fifth year of marriage, Holly Steward discovers that the son she has raised for four years, Cody Greyson, is not her biological son.She stands outside the doctor's office and overhears the conversation between her husband, Tyler Greyson, and the attending physician. "Your child has a rare blood type, Mr. Greyson. You'd better bring his biological mother to the hospital as soon as you can."Tyler rubs his temples. "Alright, I'll make arrangements soon."A loud ringing fills Holly's ears as her mind goes blank. Isn't she Cody's biological mother?She stands outside for a while before finally piecing together the gist of their conversation.It turns out that the man who promised to love and cherish her has been cheating on her since before they got married. He even swapped her baby.