The lower planes of Hell are occupied by a lot of demons. Fael'draka is one such demon, and she is used to seeing mortal souls being damned. She gets to play with any of the unclaimed ones, torture and abuse them, but now she grows bored. So instead, she devises a plan. She knows Heaven is filled with beautiful angels, but she wonders if she could corrupt one. She goes on a dangerous trip and finds one that strays from the safety of the higher planes. She starts tempting her until the angel commits a sin, and is thus banished to Hell. There, Fael takes her as a pet.