A deal with the devil.
Gabriel 1089 is an angel - an enhanced and cybernetically modified human designed to protect the city in the sky called Heaven. He follows Heaven's orders and fights its enemies. But when an attack by demons leaves him trapped on the earth below, missing both a metal wing and his network-enabled halo, he's cut off from his home for good and at the mercy of one man.
Jeff Werth is used to demons in need of his mechanical expertise showing up on the doorstep of the junkyard he runs in Old Trent. However, he doesn't expect to be stuck with an injured angel. Jeff owes the demons for saving his daughter's life, so he does what they demand he nurses the angel back to health and keeps close track of him as a possible pawn in the high-stakes war between Heaven above and the demons below. But he doesn't expect the effect Gabe has on his heart, or having to choose between his daughter and the man he's come to love.