Bart used to be a demon, but he left that all behind to forge his own path. Become a rogue for the ages. So far, that hasn’t gone according to plan. Without Hell to call home, the ex-demon's evil is wearing off, leaving him with an identity crisis made worse by tagging along on Heaven-sanctioned missions with his goody two shoes angel-in-training friend, Samantha. It's enough to stress out even the best dressed of ex-demons.
So what’s a guy who rocks horns to do but pull a prank? But when it goes sideways, Bart and Samantha uncover a cult that's killing children and sucking up their souls. The ex-demon seizes this opportunity to get back some of that old mojo, because there's an unspoken rule between Heaven and Hell: Don't mess with children. Ever.
As Bart unleashes his demonic fury to stop the killings, he stumbles onto the cult’s higher purpose: Create a Paradise on Earth, thereby upsetting the balance between Heaven and Hell. Bart wouldn't mind seeing Heaven knocked down a peg or two, but without that balance, the world will fall into darkness. For an ex-demon with conscience issues, that can't happen.