Lin Chen, a doctor of sports science in 2025, accidentally traveled back to La Liga in 2019 and became an unknown analyst for the newly promoted team Granada. At that time, football still believed in the supremacy of experience, and data and science were still marginal supporting roles. Facing the relegation underdogs with weak physical fitness and backward tactics, Lin Chen used cutting-edge weapons such as SIT sprint training, precise injury rehabilitation, and data-based tactical analysis - correcting running posture to allow full-backs to lock down Messi, scientific recovery to allow the core midfielder to return to the team six weeks in advance, and data models to predict every offensive and defensive loophole of the opponent. This underestimated "scientific teacher" counterattacked all the way, using hard-core science to break the monopoly of giants, and write the football legend of the newly promoted team winning the championship. When Europe's top giants offer olive branches, Lin Chen stands at a crossroads of choice: Should he stick to the green utopia he created, or should he use his scientific ideas to start a football revolution that sweeps the world?
