For the past few thousand years the Sins were stuck in a loop, they didn't ever interact with each other due to distance and therefore couldn't make any progress.
It seemed impossible for any of the Sins to make their way back into hell. Until by complete luck all of the Sins died during the span of a few years to be reincarnated within the same city. This city was Detroit.
Lust- Water (Layla Anderson)
Greed- Abyss (Serenity Runes)
Wrath- Hyronis (Ace Bloodfang)
Pride- LovelessHearts1224 (Nora Jameson)
Pestilence- Fire (Drake Xease)
War- Jasmine (Angelus)
Death- Jasmine (Cassidy Winchester)
- The Sins powers don't work on each other.
- The Sins naturally want to cause destruction.