Dohyun (played by Lee David), an English major who leads a fulfilling university life finds himself becoming interested in hypnosis because of the transfer student Jinho (Played by Kim Nam Woo). Do Hyun received hypnotherapy with the help of Professor Choi (played by Son Byung Ho). But after the hypnosis experience, he began to see memory phantoms full of doubts. One by one, his friends began to be tortured by the phantoms and encountered strange events. What is the purpose of Professor Choi hypnotizing them?...