Li Fan, a young man exiled to the Western Regions' desert, uses his modern survival knowledge to obtain water in the wilderness and stabilize the sand with straw checkerboards, transforming the barren land into an oasis. By cleverly applying technologies such as solar concentrators and drip irrigation, he develops farming and animal husbandry, subdues desert bandits, and opens up trade routes across the Western Regions. He successfully overcomes locust plagues, wolf attacks, and internal family conflicts. Later, he selflessly shares his desertification-control methods to save the people of the Central Plains, choosing to remain in the vast desert to continue combating desertification and improving people's livelihoods.