The yang and yin team of Connor, the Urban Paladin, and Heather, The Mystic Cleric, is very effective as his pragmatism is balance by her optimism, her enthusiasm and idealism are tempered by his cautious paranoia, his wounds are healed by her, and she is kept alive by his sword. This effectiveness aside, Connor and Heather are not your normal adventurous members of The Church. Nor are they a couple.
The players encounter an organization dedicated to toppling tyrannous governments; both good and evil. Secretly, they are led by the twin daughters of Lucifer / The Lightbringer / (Generic Adversary God). These daughters have an appropriate set of divine or demonic powers, but strictly speaking, are not evil.