In the world of immortality where knowledge is like the sea and cognition is like a boat. The protagonist, Dian Qiuzhen, is a ninety-two-year-old ascended person from another world. He wakes up in the shallows of the "Forgotten Library" with broken memories and lost all his cultivation. Relying on the foundation of the "Taiyi Golden Light Alchemy" from another world, he started over from the most basic "herb collection" (collecting cognitive fragments) in his old age. During the "offshore" voyage, he met the blind ferryman "Zhu Ying" who guarded the "Corridor of Truth", and accidentally awakened the "Yinglong Yu Lei Bloodline" and "Nine Lights Burning Sky Bone" hidden in his body. As his cultivation level returned to "fugue", he was gradually involved in the war between the "Seven Boats of the Knowledge Sea" and the King of Monster Beasts, and discovered the time paradox hidden deep in the "Maze of Wisdom" - the existence of the "time trace", an overlapping memory body. In the end, Dian Qiuzhen used the self-created "Zhou Tianxing Fighting Sword" combined with the "Hunyuan Wuji Demon Sealing Array" in the "other shore" sea to fight against the monster king "Swallowing Consciousness" and the memory overlapping body "Time Trace". At the critical moment of life and death, he used himself as a guide. Ignite the "Nine Lights Burning Sky Bone" and turn your final understanding of the "Mountain and River Society" into an eternal "cognitive lighthouse", illuminating the road to the real other shore. You will become a part of the lighthouse and coexist with the sea of knowledge.