Hilary was born into the Royston family, a declined White Wolf bloodline. When she was a child, her mother sealed her power and hid her in the Blades tribe. Because she was regarded as someone "without a wolf soul," she grew up in humiliation, enslavement, and abuse. Although she is timid on the outside, her inner self is always resilient, kind, and full of compassion. Forced to become a substitute bride, she met Aldrich at the Shadow tribe. Their relationship from initial misunderstanding gradually developed into mutual salvation. As her memories gradually recovered, she learned the truth behind her mother's death and the family's destruction, while awakening the White Wolf power. In the end, Hilary is no longer the "useless girl" who is trampled upon, but becomes the heir of the White Wolf Queen — a powerhouse bearing pain yet still choosing to protect the ones she loves.