Lu, the captain of judo team at a school in Beijing, has been brought up by her mother as a substitute of her brother to compensate the loss of him. In the seemingly masculine appearance, she secretly falls in love with Nicole, the internet celebrity girl from Taiwan.
Lu and Nicole meet each other in a judo competition of which the winner would have the chance to become the leading actress in an action film. Nicole wins the competition, but she disappears right before the movie start shooting. As Nicole’s substitute, Lu then has the chance to play the leading actress of the action movie.