Cassius is a quirky book shop owner who seems to see quite a bit of the paranormal world, including uptight angels, troublesome demons, and more than a few grumpy ghosts. Not many people are aware of his gift, however, but he always uses it to help those in need. When Cassius gets a message that he needs to pair up with a mysterious gray angel to set the afterlife to rights, he discovers Kushiel, an angel who is apparently a bit of a heavenly outcast, Beneath the angel's gruff and guarded exterior, however, lies a tender and beautiful heart, and Cassius is determined not just to save the afterlife (and possibly the entire universe), but also to save one very sexy angel along the way.