The story shows how Caien became a demon lord, is about his relationship with Rakin, The King of Speira, and the love triangle between the 2 with the beautiful Rea of the mascan race. Asarella also apears, but the story seems to be concentrating more on Rakin and Rea.

Note: Read this after you read 'Masca' as this series jumps right into it with no introduction and you will be confused if you read 'Masca:The Beginning' first