In the steam-filled giant city "Iron Dome", the master of Su Wan, a low-level female mechanic, left without saying goodbye, leaving only a shabby notebook full of crazy graffiti. After flipping through it, she was shocked to realize that it actually contained the forbidden drawings of the core of the first generation of perpetual motion - a truth that was officially declared a failure but was enough to overturn the city's energy monopoly. As the security department of the energy company pursues the pursuit step by step, Su Wan, under the protection of the resistance organization "Rusty Nail Society", gradually uncovers the shocking scam of sixty years ago: the inefficient energy system is a man-made shackles, and the master is one of the engineers who was framed that year. In the midst of hunting and betrayal, she must decide whether to ignite this dangerous rust fire, even if the cost is to burn herself and the entire city's hypocritical order.
