Long long ago, there was no difference between the heaven and human world… Every corner was filled with happiness until one day something unexpected happened. The archangel Lucifer fell in love with a girl; however this girl was already in love with another angel. Lucifer lost his mind and transmuted this girl into dew and the angel into starlight in order to separate the two lovers forever.

Lucifer knew he would be punished sooner or later, so he gathered a rebellious army and attempted to overthrow the rein of Jupiter. Afterwards, Lucifer and his rebel army failed and were expelled to Hell. Ever since Lucifer was expelled to hell, he has been planning his revenge. He is expanding his evil forces now, and has founded a demon-training camp, with the purpose being to destroy the Garden of Eden, and what’s worse, Lucifer believes it’s the right time to take his revenge on Jupiter.