As a fan of Korean thrillers, I approached this film with high expectations. Initially, it seemed promising, hinting at suspense and intrigue. However, it quickly became clear that the execution fell short. The story had potential, but the emotional connections with the characters were weak, leaving me disengaged. The film relied heavily on the overused concept of hypnosis and another key element (which I won't spoil), but these plot devices felt poorly integrated and unconvincing. Despite the story's potential, the execution was lacking, leading to a disappointing experience. I give it 1 star for the storyline, but the overall delivery was a letdown.