Fiona is an Acquirer, an immortal who uses magic to hunt for ancient artifacts. Ever since she failed to live up to her fate and find the Book of Worlds, she's been shunned by those around her. Worse, she's slowly losing her mind as her subconscious keeps trying to accomplish her fated task. When she's presented with one last chance to find the Book of Worlds and thus save her sanity, she'll stop at nothing to accomplish her goal.

For more than one hundred years, Ian has been locked in a nightmarish prison. An accomplished thief, he was thrown into hell for failing to maintain the secrecy of his magical race. When Fiona presents him with an opportunity for escape, he'll do anything it takes to ensure that it's permanent, even if it means betraying the woman he's grown to care for.

As Fiona and Ian get closer to finding the book, they learn that there's more at stake than they ever imagined - like the fate of the world. When their task threatens to tear them apart, they'll have to make the ultimate decision: life, or love?