简要：Roberto is a drummer in a rock band. He keeps receiving strange calls, followed by a mysterious man. One night, he managed to catch up with his persecutor and tried to make him speak, but in the subsequent struggle, he accidentally stabbed him. He ran away, but he knew that his trouble had just begun. The next day he received an envelope containing a picture of him killing the man. Someone is killing all his friends and trying to frame him for murder...
