Synopsis

Humans all over the world got transported into a strange tower, where they would awaken abilities akin to those of fairytales. And at the same a creature announced that if they did not clear the 50th floor, humans would be wiped out of existence.

Kim Taeho was like everyone else, but he had awakened a unique ability. An ability that would make him stronger than anyone else:
No matter what I do, no matter how many times I try, I still can't beat this floor because of this skill:
- Perfect Clear [X]
- If a perfect clear is not achieved, return to the point when you first entered the floor.