In a cram school, two students, Shiu and Bass, hear a legend about a mysterious teacher who claims that if you make a wish for success on the forbidden fourth floor, you can get into any school, no matter how difficult.Together with a friend, they delve deeper into the mystery, only to discover a terrifying secret hidden on the sealed fourth floor. As bizarre events unfold, they must uncover the truth and escape this supernatural nightmare.When success depends on supernatural powers, and that success comes at the cost of life, how will they find a way out? Will they survive or die?