We all know Yin and Yang but this story has nothing to do with their legend. It has nothing to do with positive and negative spirit or the good and bad of the world. There's no supernatural or magical plot to this story; it's just about two very close friends nicknamed after the spirits. Even though Yin is female, Marc, a very cold, distant and mean boy, was given that nickname. Though Yang be a boy, Eden, a party hard, goofy, and easy going girl, was given this nickname. They have been friends since 8th grade and, even though their personalities don't match, they have many things in common. But, Suddenly, Marc confesses! How does Eden take it? Can they go back to being Yin and Yang.