Satan and God fought each other (1 on 1) because God was about to destroy Hell because lucifer (satan's son) was having a child with a human (which goes against his rules) so he wanted to punish everyone in hell. God killed Satan making lucifer ruler of hell. After the battle God was weak so he decided to go back to heaven leaving all of hell intact. God is still pissed off and wants to destroy of all hell. God and the angels wanted to uses lucifers daughter to destroy hell so they hid her somewhere on earth. Somehow Lucifer found her and followed her around to get a feel of her personality. If you have any other questions just ask.