Vigilance. The mission to safeguard Nikki Youngblood depends on the
fragile alliance of two half-angel, half-human guardians, both
struggling with intense feelings for the girl who has been assigned to
their care. Mace, steadfast and deeply in love, wants to protect Nikki
at all costs, while Raven’s loyalty to Nikki finds him advocating for
her independence and battling his own darker inclinations. At the same
time, Nikki finds it harder and harder to choose between the two
heavenly beings she may never have. Dangers intensify, and tensions
between Mace and Raven flare as the purpose of their mission becomes
clear. Can their defenses hold up to master manipulator Damon Vessler
and the powerful secret he holds regarding Nikki’s heritage? Can anyone
protect Nikki from her true purpose and destiny?