"Have you ever heard the story of the sun and the moon? How the sun loved the moon so much that it died each night to let the moon breathe?" Due to some circumstances after her mother fell into a coma, Ryu Hyejin finds herself in the care of a mysterious woman who reveals nothing about herself except that she her name was Song Jihyo. Hyejin transfers into one of South Korea's most well-known schools, Ilhwa High and immediately finds herself on the bad side of the school jjang... Bang Yongg