In the distant future, the technologically advanced earth is suddenly attacked by a mysterious energy storm, and is forcibly connected to the world of "The Classic of Mountains and Seas" and the Rune Land. Time and space are distorted and order collapses. The rare beasts and mysterious scenes from the Classic of Mountains and Seas suddenly appeared, and heroes and monsters from the League of Legends also arrived one after another, and the world fell into chaos.
Lin Yu, a genius scientist and adventurer, joins hands with his assistant Su Yao, and works side by side with the heroes of Runeterra in the chaos to find a way to save the world. Among them are the brave barbarian king Tryndamere, the charming nine-tailed demon fox Ahri, and many League of Legends characters with different personalities and unique skills. However, a mysterious organization hidden in the darkness quietly rises. Its leader, Shadow Sha, attempts to use the chaos of the three worlds to awaken the "Source of Chaos" and introduce evil power to rule the world.
Lin Yu and others experienced many obstacles in their journey to find the "Source of Chaos". They travel through three worlds, not only facing strange creatures in the Classic of Mountains and Seas and powerful monsters in Rune Land, but also resolving differences and conflicts between heroes due to ideas and interests. Under the machinations of the mysterious organization, betrayals are everywhere, and desperate situations often come. But with their firm belief and extraordinary wisdom, they fought back time and time again.
Just when the "Source of Chaos" was successfully destroyed and the crisis was thought to be resolved and the world was rebuilt, mysterious energy fluctuations reappeared, heroes disappeared mysteriously, and a new undercurrent of crisis surged. All clues point to the forgotten ancient civilization, which colludes with the remnants of the mysterious organization in an attempt to release the power to control all life and once again cause catastrophe in the universe.
