It's the find of the century - alien angels and the spaceships they arrived in. Cindy-lu should have been in biology research heaven; instead, she's part of a team preparing for the apocalypse. Hell has entered the solar system, a behemoth that will decimate the planet - and its inhabitants. But there is hope for humanity if they can get enough people off-planet to start over. However, sabotage puts a dent in those plans. Cindy-lu is tasked with finding a way to help repair their only means of evacuation, and to ensure she can get the job done, they've assigned her a guardian angel. Elija is a warrior who is happiest hunting demons and the imps infesting planet Earth. He chafes when he's reassigned to protect a bubbly human from coming to harm. What he doesn't expect is to start wanting something more than a chance to fight. Hope for the future is on the line, and it will take him pushing back against the scriptures he's followed so rigorously for him to prevail-and save the woman he loves.