Samuel Hallow is desperately in love. However, he knows his family won't condone his relationship with his boyfriend, Henry. The brothers mate for life and neither man has had the mystical tattoo appear that binds them to the one chosen for them.
Delilah, Henry's lifelong friend, comes to town and Samuel is consumed with unexplained lust. He and Henry both sleep with her and the tattoo appears on all three of them, marking the trio as mates for eternity. He nearly loses the others when he confesses his true nature – that he, like his six brothers, are werewolves. Although Delilah and Henry are angry and obsessed with their careers, they can't stay out of his bed.
Can he protect his lovers from the vampires who hunt them, who want to use them to get possession of Momma Hallow's ancient amulet? And will the Hallow Brothers stand united when they discover that Henry, the man Samuel loves, embodies an ancient evil magic, hell bent on conquering the world?