Liang Xiaotian, a young man of the Linquan tribe, had known Lue'e, a girl from the Celestial Tribe, since childhood. By chance, he learned the secret of the Three Realms. In ancient times, a highly advanced civilization once existed on the earth, but war destroyed it, dividing the world into the Celestial, Human, and Demon Realms. Liang Xiaotian's close friend and fellow tribesman, Suilong, was hot-tempered and hated evil. After offending his clan leader, he endured a life of hardship before obtaining an ancient Kuafu mech and becoming the prophesied King of Mountains and Seas.
The world was once again thrown into turmoil. The Human Emperor Lie, arrogant and foolish, fell under the demons' control. As the Celestials and demons clashed and the land descended into chaos, Gongsun Xiaoxuan, a young man of the Earth-Controlling Tribe, was forced to flee with his people into the Great Wilderness. There, he encountered all manner of strange phenomena and discovered that the world contained countless parallel spaces and many highly advanced civilizations. He also uncovered the mastermind behind the destruction of the ancient civilization.
Liang Xiaotian, Suilong, and Gongsun Xiaoxuan became sworn brothers. With help from spacetime agents of the Administration Bureau, who had come from the future, and many peace-loving, highly advanced intelligent beings, they defeated the dark civilization that sought to conquer the universe. Along the way, the three came to understand a universal truth: the Dao. Only by following the essence of the Dao can humanity avoid destroying itself, achieve unity between heaven and humanity, and reach the pinnacle of civilization.
The two books draw on traditional xianxia as their creative source, blending tales from the Classic of Mountains and Seas and ancient myths and legends with modern science fiction, apocalyptic themes, black technology, martial arts, detective stories, and more. All events in this book are purely imaginary and intended for entertainment only.