The girl Dorothy is the first witch in the Dracula family. The Demon World War a hundred years ago tore apart the Dracula family, and her parents left her forever.
Only the devil knows the truth. And in order to get close to the Demon King, she got close to his youngest son. Unexpectedly, they gradually developed feelings, and Dorothy gradually discovered that she once had an unknown past with the devil's youngest son.
At the same time, Dorothy and her friends began to discover that school was not as simple as they thought.