Jamie is the illegitimate son of the Moore's family. But what everyone does not know is that she is actually a girl, because her mother is seriously ill and needs medical expenses. She disguised as a man for 18 years and stayed in the Moore's family, suffering from humiliation and injustice. But everything changed at her sister's engagement party. She unexpectedly had a one night stand with Dan, her brother-in-law to be. From then on, her life went in a different direction.