Kind-hearted Wren O'Hara spends most of her time working as a case worker and caring for her mother. When she's attacked by a client at work, she's rescued by a mysterious stranger who is more than he seems. Riagan Tenman is an immortal warrior druid charged with protecting the ancient Murias Cauldron that grants healing and immortality to all. When they meet during a chance encounter, their worlds collide. And when Wren discovers he holds the key to helping her mother, Riagan will challenge everything Wren thought she ever knew.