Sky was an angel living in heaven until she grew enveous of her sister, (who ill draw later) cloud, and she was getting all of the attention instead of her and she became lonely and she wanted to be the spotlight instead of her sister, and taken over by envy and anger, she turned into a creature of hell(scuse me language) and fire,and killed her sister as well as her mother who tried to stop her, the king found out about this and banished her from heaven to earth, where she lives now, but she wants to find a way back to heaven to get revenge on the king and become ruler instead of him. She doesn't want anyone to know she was banished, so she tells everyone that shes a fallen angel, and is trying to find a way back to heaven.