Defending those they swore to protect might cost more than they bargained for.

Sellsword Morrígan wants nothing more than to defend innocent people. So when Dàibhid, the king of Cunlaran, offers her and her friends the opportunity, she can hardly say no. But working for Dàibhid could expose her secret-she's not only a princess but Dàibhid's childhood ex-best friend. If he ever realizes who he has in his castle, Morrígan's life will come crashing down. The problem is, it's more difficult keeping her distance than it should be.

Dàibhid is desperate to protect his subjects against an invading enemy intent on stealing his throne. Cautious with lives and hoping to avoid war, Dàibhid hires sellswords to gather information undercover. But when the mission goes sideways and people get hurt, Dàibhid's fear of failing his subjects worsens. The only effective balm seems to be spending time with one of his new hires . . .

As the pair grows closer, enemy attacks turn deadlier and the team's mission becomes paramount. With secrets and lives on the line, Morrígan and Dàibhid must ask themselves what they're willing to risk before everything they've worked for is lost.