In 2026, the 300th anniversary celebration of the resurgence of spiritual energy has just passed, and the earth has entered the "post-recovery era." Under the surface prosperity, junior Lin Yuan awakened his "undefined" talent on the edge of the "Battlefield of Two Worlds" - it can observe, imitate, and ultimately "define" all forces in the world. When Lin Yuan relied on caution and talent to step by step from the campus competition into the "Sea of Chaos", a taboo place where two worlds meet, he discovered that the so-called spiritual energy recovery on the earth was just a "spiritual energy leakage accident" in the higher world "Lingyuan Continent". At this moment, the "Purification Sect" of Lingyuan Continent has penetrated for three hundred years and pressed its fangs of aggression against the throat of the earth. Lin Yuan must use the power of "definition" that has not yet been fully awakened in his hands to define a way out for mankind in this century-old chess game that spans two realms.
