Transmigrated to a post-apocalyptic era, the protagonist is initially imprisoned in a metal cage. Failing the final exam results in being sent to the mantle mines to become a mining tool. Fortunately, a non-intelligent panel system serves as a golden finger. By diligently studying, exercising, and acting as a model citizen in this new world, the protagonist gains attribute points, rewards, and even epic tech blueprints for their good deeds. As a model citizen, the protagonist upholds their principles, changing the world one action at a time.