According to Greek mythology, humans were originally created with four arms, four legs and a head with two faces. Fearing their power, Zeus split them into two separate parts, condemning them to spend their lives in search of their other halves.

Lee Sun Hi has just enrolled in SM Academy, a pertigious High school known to be filled with sons and daughters of the high statues. When she stumble upon a dance studio, she find herself face to face with Kim Jong In or Kai; the dancing machine and also the ice prince of the school.

What more will she face?