After a car accident, Dae-yong, a high school student, starts seeing people's eyes turn either into red or blue. Soon he realizes there's a pattern and that red eyes mean that person is going to die and blue eyes mean that person is going to kill someone and that he is now capable of saving people. Not only good things will come out of that as there's a cafe owner that has the same ability as him but is obsessed with murdering people and his relationships with his girlfriend Hee-kyung and best friend In-ho are at risk because of him having changed so much after becoming known as a hero.
