Bo is hired by a Dark Fae named Mayer to find out how a human managed to win a bet with him. The reward for finding out is having an Oracle reveal something of Bo's past to her. Bo solves the mystery by finding out that a Fae that can jump between human corpses, called a Hsien, managed the deed. In the end, the answers Bo seeks are not given, but she does learn one thing. Her mother is alive, and coming for Bo.

The Ash takes drastic action against the threat bearing down on him, which in turn convinces Bo to make a potentially life-threatening decision. When those close to her suffer devastating injuries, Bo can no longer ignore her destiny.

When Kenzi’s childhood friend is snatched away before her eyes, Bo follows her underground to help find him. Meanwhile, Dyson’s new partner looks like trouble for Bo.

Bo is forced to make the toughest decision of her life to stop evil from bringing destruction on her world.