After transmigrating, Yang Jun finds himself reborn as the lowest-tier creature in a dungeon—a bullied Mushroomman leader.

These dungeons are often visited by so-called “players”…
but they aren’t humans. Instead, they are all kinds of other species competing for survival.

There are snail tribes, earthworms, and even bacteria clans that directly compete with the mushroomfolk in the same ecological niche.
Beyond that, there are bizarre factions like the Imperial Bird race, obsessed with idealistic doctrines, the Drake Lizard Legion that spreads “victory propaganda,” and the brutal, bloodthirsty Demonfolk.

In order to survive and one day see the light of the surface again, Yang Jun begins cultivating various types of mushroom soldiers, leading his people in an upward campaign—

A relentless struggle to rise from the very bottom… and conquer their way to the top.