Programmer Lin Tian accidentally traveled to the world of "Ultimate Class One" on a rainy night, bound to the "combat power assistance system", and gradually grew from a "fighting scum" with a combat power index of only 50 to a guardian of order across time and space.
When Wang Dadong and Wang Arthur, the hot-blooded young men of the Ultimate Class, fought side by side with him, when Ding Xiaoyu, the supernatural traveler of Iron Time and Space, depended on him for life and death, and when Sun Ce of Silver Time and Space clashed with his mirror image - Lin Tian discovered that his time travel was actually the trigger of multi-time and space energy imbalance. The system is not only a golden finger, but also the "Mediator Key" left behind by the first generation of guardians, and he must complete the transformation from "outsider" to "savior" before the rift in time and space swallows everything.
