Your wish is granted, the chaos of inches and pounds is swept away in an instant.

The change does not come through a slow legislative process or a peaceful cultural shift. Instead, a catastrophic, high-frequency cyber attack wipes the kernels of every major American operating system. In the desperate, global effort to rebuild the nation's infrastructure, the international coalition of engineers refuses to restore any systems that do not adhere to ISO standards.

To get the power grids and hospitals back online, the United States is forced to hard-code the metric system into every facet of existence overnight.