In Cangyuan Continent, spiritual energy and machinery coexist, and the sky rail train shuttles through the sea of clouds. Mo Ya, the blacksmith of Rust Town, is actually the God of War at full level who sealed the Demonic Abyss a thousand years ago. He is in the advanced stage of obsessive-compulsive disorder but only dotes on Xuan Yi. She is an orphan hunter with the blood of dragon and bird. She has a hard mouth but a soft heart and loves to eat sugar buns. The two were bound by an unexpected contract and were involved in the conspiracy storm of the Holy Academy. The hypocritical priest controls the spiritual veins, the poisonous scholar covets the bloodline, and villains surround him. Mo Ya relies on the golden finger of the "Rusty Heart Workshop" to sense the emotions of all things, repair old things every night and accumulate gears to unlock the truth. Xuan Yi awakens his bloodline and holds two swords in his hands. Together with him, he controls the machine beast, builds the ancient tower, and breaks into the underground palace. They flirt with each other slowly and warmly, one is cold-faced and warm-hearted, the other is soft-spoken and soft-handed. Their hearts resonate with each other, and they work together to break the whirlpool of power and intrigue. In the end, the imperial power changed, and the two retreated to Xiuzhen, smiling at each other in front of the sugar bun stall.