Growing up with human parents, Bo had no reason to believe she was anything other than the girl next door — until she drained her boyfriend to death in their first sexual encounter. Now she has hit the road alone and afraid. She discovers she is one of the Fae, creatures of legend and folklore, who pass as humans while feeding off them secretly and in different ways, as they have for millennia. Relieved yet horrified to find out that she is not alone, Bo decides to take the middle path between the humans and the Fae while embarking on a personal mission to unlock the secrets of her origin.

Bo is coerced into solving how a human scammed Mayer, a Dark Fae bookie.

Kenzi becomes deathly ill when she inadvertently eats some toxic “human soup” at the home of an Aswang. Bo and Lauren embark on a daring undercover mission together in search of a cure at a powerful pharmaceutical company, while Dyson and Trick help Kenzi fight for her life.

Bo finally learns the identity of her mother – and that those closest to her have been keeping secrets. No longer sure who to trust, Bo decides to track down “Mommy Dearest” alone, in order to extract the truth about her own origins once and for all. While everyone frantically searches for Bo, Dyson visits an ancient Norn, a wish-granting, tree-dwelling crone, where – in order to protect the woman he loves — he makes a sacrifice that may change his relationship with Bo forever, as she prepares for a final face off with her deadly mother.