Liam hasn't seen his widow, Becca, in nearly four hundred years and suddenly there she is, riding past the commuter train he's stuck on with a pixie princess.
In the battle between Light and Dark, Liam is a Shield, a Protector of the Balance, and he's been running from Dark Hunters for over two thousand years. He's not immortal in the usual sense of the word, but he's been reincarnated so many times that his body and mind are slowly breaking down, which is the perfect time for Becca, Dark forces, and an elven bounty hunter to arrive in town.
Liam's not the only one in trouble, though, because all over the world Shields are dying, the Balance is shifting in Lucifer's favour, and it's all because of the smartphone app from Hell. Liam IS the Broken Shield.