Janet, who was leading the zombie fight in the apocalypse, experienced time travel. This time she traveled to the Wasteland World. Eighty percent of the land in this world was polluted. Humans here were divided into five classes, and she became the lowest class of fifth-class citizens. Poor Janet had to work as a janitor sweeping garbage. She heard that sweeping garbage in the wasteland world paid well with few tasks and was a job everyone aspires to. But why was this job completely different from what she imagined? She entered the disappearing subway line 1, and she ran into Fishman carrying briefcases. She entered the most popular hot pot restaurant, but this place actually could eat human! She entered a haunted mansion, a house whose furniture moved on its own in the middle of the night.