Elsie Rivers never expected her life to be anything more than mundane, but everything changes when she's targeted by a mysterious organization. Before she knows it, Elsie is whisked away to a world where angels patrol the streets and people live in fear of the men in grey. Swept up in conspiracies, romance, and the promise of Armageddon, Elsie must find a power within herself that she never knew existed if she wants to survive.