Hidden in the Forbidden Forest, the last Supreme Mage Arthur rages after his cabin is destroyed by a mysterious spell. He vows to hunt down the "terrorist," but in the ruins of a city gang's lair, he finds the culprit is his four-and-a-half-year-old daughter Lily—whom he's never met. Lily not only inherited his bloodline, her talent is even more monstrous. To protect this "little demon" who treats forbidden magic as a toy, Arthur is forced back into the world, hiding his identity in the city. Facing gang assassins, a magic council wanted order, and dark forces seeking to exploit Lily, father and daughter team up for "daughter causes trouble, dad cleans up" anti-cliche mayhem, finally reconciling with ex-wife Evelyn and uncovering the truth behind his faked death and forced separation years ago.