In the troubled times of the Republic of China, there are many spies. Wei Zhao, a genius doctor who is hidden in the market, has the power of wood. He can activate the spiritual energy of plants and trees to make elixirs. He uses his alchemy skills to maneuver among various forces and secretly protects key information. He joins hands with the single heroine Luan He, who is an underground liaison, to break the crisis in the treacherous concessions and streets, use alchemy to save the world and protect the people with wisdom.
