So-yeun is an animal groomer who works in a pet shop. One day she gets stuck with a Persian cat named Silky when its owner suddenly dies. From then on, So-yeun is constantly haunted by a bobbed hair girl with green cat-like eyes who turns her life into turmoil. So-yeun desperately seeks help from the people around, but no one listens to her. The presence of the girl and the sound of Silky's cries start to choke in around her life more and more. Not only that, people around So-yeun get killed one by one. Soon So-yeun comes face to face with the bobbed hair girl at the scene of a horrific death. So-yeun gets rid of Silky, hoping her troubles will come to an end, but Silky keeps coming back to her like a boomerang. Terrified she could be the next to die, So-yeun sets out to find out the identity of the girl with the help her dead friend's ex-boyfriend, Jun-seok, who is a cop. Later So-yeun finds out the truth to the tragic incident that took place in the past.