Wealthy heiress Emily is hunted down by her relatives over her massive inheritance. She flees to her family’s rural farm for shelter, only to accidentally discover that their fireplace connects to a dragon‑ruled otherworld. She keeps sending modern supplies to this realm, aiding Kael, the metal dragon lord, in protecting his people and homeland. To the dragons, she becomes the "Dragon God". From firewood and medicine to modern weaponry, she reshapes the dragon‑race war step by step — and rewrites her own destiny.