A love that spans centuries… While visiting the gravesite of a centuries dead Irish warrior, Bostonian Carter McCann finds himself thrown backward in time to the moment Fionn Ò Ciardha was slain in battle. Realizing he could change the past, Carter travels back to 15th century Ireland a second time in an effort to prevent Fionn’s untimely death. A love he tries to deny…Fionn Ò Ciardha doesn’t know what to make of the strangely dressed but handsome man who appeared suddenly outside the walls of Moone Castle. Figuring him for a spy yet unable to fight his growing desire for Carter, he sticks close to the foundling hoping to uncover the truth of why he’s come to Moone. A love worth dying for…Unhappy with his dream lover’s mistrust in him, Carter sets out to save Fionn’s life by any means at his disposal. As the coming battle draws closer, will Carter be able to earn Fionn’s trust as well as his heart before history repeats itself?

Jilted at the altar, Cadence McCann takes her brother on her dream honeymoon to Ireland to visit the castle ruins where their parents met and fell in love. After arriving in Ireland, her brother, Carter, disappears for three days, only to return with a fantastical tale of going back in time to save the life of an Irish warrior. After being convinced Carter is telling the truth, Cadence agrees to return to the fifteenth century with him to see Moone Castle in its heyday, never guessing she'd fall fast and hard for the chief of the castle guard who is preparing to defend the castle from an invading English army bent on sacking the castle. Donnall Healy, Moone Castle’s second in command, is instantly attracted to the fiery redhead who challenges his plan to defend the castle at every turn. Not used to a woman dabbling in what he considers a man’s responsibility, Donnall fights his attraction to Cadence while working to save his home and his people. Cadence’s insistence that the women be trained as archers to assist in the defense of the castle against Donnall’s objections, sets them at crossed swords. When the English army arrives, will Donnall and Cadence be able to put their differences aside to work together and defend the home and the people they love, or will they lose everything, including each other?