Lin Mo and Su Qing work together to survive by relying on their abilities integrated into traditional culture. Lin Mo can swallow metal to strengthen himself, but faces the risk of metal corrosion; Su Qing uses a mechanical prosthetic limb to analyze the code. The Bagua array at the core of the prosthetic limb hides mysteries, but it is easily disturbed during analysis.
The two met from the ruins, fought against mutated creatures such as iron-shelled worms and metal-winged birds, and experienced dangerous situations such as the metal quicksand area and the code storm zone. In the process, they plan for the future: building a safe fortress, studying mutant biological codes, clearing traps, and cultivating harmless plants.
At the climax, they had a decisive battle with the Rust Apostle and the Code Ghost in the central database, triggering the ability resonance to activate the twin code, and starting the robot to repair the world. In the end, the world returns to order, and the two work hand in hand towards a jointly planned future, explaining the true meaning of cooperation and balance.
