Despite being popular among others, Eunji was a troublemaker who hated dealing with others. The only exception she had was with her tutor, who she developed feelings for after a long time. Eunji felt heartbroken when her tutor had left from Korean to America without saying a word to the latter. Not wanting her daughter's grades to fall, her mother arranged for a new tutor for Eunji. Eunji soon develops a bond with the new tutor, maybe even a stronger one than what she had with her old tutor.

Taken by her father's bodyguards, Jei is forced to exist as the identity of her twin brother, Jay. Her father's threat to endanger her mother lead Jei no choice but to comply to her father's wishes, dressing as a man to represent the figure of her brother. Her father wanting to maintain business relations with other companies, Jei has no choice but to also maintain relations with the other companies' daughters, while in the same time maintain her true identity a secret.