Rain was just a normal girl who only want to feel loved and cared by her own parents. She was depressed at the age of 16 and make her own imaginary friend named Cloudy, but suddenly she fell in love with the fictional man.

There is a god of moon and sun who feel inlove with a mortal. Their love is endlessly, but not until the father of the god found their relationship. He destroyed their love and closed the door for the room of god and room for human. 9 months ago, the mortal gave birth to a beautiful girl. The god wanted to see his child, but he can't not until he met someone who helped him to find the future goddess of moon and sun. 16 years passed, a girl named Soluna appeared who destined to save the world of mortals.