Leif Skarsganger and his elite band of immortal warriors have been charged to protect humanity from the evil Norse god Loki. Under attack from Loki's minions, Leif is shocked to encounter a dark-haired beauty who fights like a warrior herself. Wounded and feverish, the Viking kisses her, inadvertently triggering an ancient Norse bond. But when Naya Brisbane breaks away and disappears before the bond is completed, Leif's warrior spirit goes berserk.
Astrid Irisdotter is a Valkyrie - a fierce warrior fighting to protect humanity from the evil god Loki and his brutal minions. She's on an urgent mission for her queen when everything goes hideously sideways. Undercover agent Luke Holden arrives on the scene just in time to save her life - and put his own on the line. Luke may have saved her, but that doesn't mean Astrid can trust him. Tempers flare as they hide secret upon secret from each other, but Astrid's inner warrior knows what it wants...and it will not take no for an answer.