Modern corporate worker Ji Feng accidentally travels through time to the Three Realms of immortality on his way home after working overtime. He originally hoped to rely on the protection of immortal sect bigwigs to seek longevity, but discovers an extraordinary book titled The Classic of Myriad Spirits of Mountains and Seas extra in his mind. This book has special rules: sitting in meditation and seclusion cannot improve one's strength at all; only by walking across mountains and rivers, witnessing the living beings of the world, and recording them in the register can one unlock divine abilities and harvest heavenly treasures. Since then, Ji Feng has embarked on a unique path of immortality. While others bury their heads in bitter cultivation, adventure for treasures, and brave life-or-death tribulations, he strolls and travels all the way, growing stronger step by step while walking.