'HUMAN QUALIFICATION TEST'. A test that turns the test taker into a beast when they fail. 'YEON-WOO LEE' is the survivor of the HUMAN QUALIFICATION TEST, and two men approach to give him two options. YEON-WOO must decide between living a normal life with his memories erased and working in a company that protects humanity from abnormalities. With the hope of getting a job, he decides to take the latter option. After starting work in the company, YEON-WOO must fight against incomprehensible objects, creatures, and happenings with the survival instincts he did not know he had.