Zack is a severe mental patient, but he is very intelligent, violent and kills many people. He is detained in a psychiatric ward on an isolated island.

Crazy Zack with high intelligence switched places pretending to be the newly arrived doctor, he perfectly handled the real doctor, cutting out his tongue. Crazy Zack walks out of the special hospital room. Now he is a fake doctor.

Zack walked into the doctor's office, sat down at his working position, holding a medical book. He looked gloomy and cold like a psychopath. The voice is deep, hoarse and gloomy.

"Finally got out of that smelly hospital room."