Modern youth accidentally traveled to a martial arts world centered on contracts, envoys, and fusion of strange beasts from "The Classic of Mountains and Seas" - the "Great Wilderness World". Here, the realm of martial arts is inseparable from the power of strange beasts. A powerful warrior must be a powerful beast master. Relying on the foresight of the knowledge of "The Classic of Mountains and Seas" and the application of modern scientific thinking (especially in terms of combat strategies, analysis of the habits of alien beasts, and energy utilization), the protagonist rises from the bottom and creates his own martial arts myth in this world of jungle and alien beasts.
