Lily Pierce, haunted, seeks her estranged father, a disgraced history professor, to learn how to battle supernatural threats like knights fighting monsters, drawing from a bygone era of swords and armor.

Lily Pierce is sick of being haunted. She decides to reconnect with her estranged father, a disgraced history professor, and learn how to draw upon a time of steel and blade when armor-clad knights rode out and dueled their monsters to the death.