When two people are in love, there is always a third person who wants them to break up.
When Nam Ji Won's boyfriend broke up with her for another girl, she had three options:
2. Beat the hell out of the couples
3. Pretend to be a boy and seduce the girl to teach her ex-boyfriend a lesson.
First time, she did it for justice. Second time, she did it for money. Third time, she did it for fun.
What happens when she attracts the wrath of a certain someone because she stole his girlfriend?