Liu Li was lucky enough to be selected for the beta test of the latest game, Black Helimu World. While attempting the conquest of the final boss in the beta, he was murdered through underhanded means by Li Tian, the son of the agency's owner. When Liu Li woke up again, he found himself reincarnated as the hidden-quest NPC, a little mute whom no one had ever managed to conquer. Entering the game world 72 hours early as an NPC, Liu Li changed his name to Liuli and decided to shatter Li Tian's ambition to dominate the game.