While leading the charge against zombies in the apocalypse, Nancy Clark transmigrated—this time, into a wasteland world.

Eighty percent of the land in this world is polluted.

Humans are divided into five classes, and she became a fifth-class citizen—the lowest, the unlucky defectives.

Penniless and destitute, Nancy Clark had no choice but to become a cleaner and sweep up trash.

Rumor has it that cleaning up trash in the wasteland world pays well and is an easy job—a dream occupation.

But... why is this cleaning job so different from what she imagined?