1980, Gangtok City One scientist, named Professor Prakash Khurana. This biologist was immersed in making a strange connection between wildlife and human life. His idea is that although God's best creation is man, but man is imperfect. Mentally human beings have a lot of intelligence and judgment, but physically human beings are much weaker than animals. The professor's idea is that if man could acquire the physical powers of a wild animal with his intellect, there would be nothing impossible for man on this earth. With that effort, the professor spent a long time in his laboratory. His assistant Nitin Brahma works with the professor. Not only does Nitin work as a professor's assistant, Nitin is a well-known teacher of biology and human anatomy at a well-known science college in the city. Nitin was very famous as a student, and Nitin was very close to the professor for his intelligence. The professor began his research with a small tiger cub. The professor, through his biology and chemistry, seeks to create a fluid mixture that mixes human bone fluid with human body blood cells, and the juice that is transmitted to the tiger's brain in connection with human blood and human skulls, through his biology and chemistry. Through his biology and chemistry, which will make human life extremely powerful. The long ten years of hard work and concentration of the professor and his assistant could not give them success. The professor spent most of his life in the laboratory, never giving his family time. His wife died giving birth to a child, and the next time his son grew up, he was established in life. But unfortunately, both the professor's son and his son's wife died in a road accident. The professor lost himself from all sides and began to think of himself as a failed scientist. Professor Khurana left Gangtok with her grandson and moved to Mumbai, a long way away, to start a new life.Time has passed and then a lot Nitin Brahma is now an honorary professor in Gangtok. Now he doesn't pay attention to any research. Nitin is busy all day with his college students and teaching. Nitin got up in the morning and left for college in the morning, then had breakfast at home and left for college. Nitin's wife is busy with his family Nitin's daughter Suhani is studying journalism in Mumbai. Nitin's mind has been broken since that research failed, so he is now busy with his normal life Also, Professor Khurana has not had any contact with Nitin since he left Gangtok, and Nitin has not tried to have any contact with the professor. But even though Nitin's life was peaceful, the city of Gangtok was not peaceful. Every now and then someone was disappearing from the city, whose bodies were found just two days after the disappearance. Police said the bodies were found in disarray It is not possible for a common man to kill like this. The whole body of a corpse is as if someone had torn it off with nails and teeth.An extreme panic has spread in the city. No one dares to go out in the dark of night. If it is night for someone to return home, his family is in a state of panic, maybe he will not return home. Lots of rumors and various stories spread in the city. Some say that in the darkness of the night, or as many have seen, some supernatural shadow wanders in the darkness of the night. City Police Officer Selim Khan Selim is responsible for investigating the killings. His idea is that a serial killer has come to Gangtok, and that serial killer is a mental patient. Because the way he kills proves that the murderer is mentally unbalanced, and not just the murderer's addiction to murder, he loves to play the game of death by tearing the corpse apart. But the idea of a class of the city, an incorporeal spirit has come to the city, which may be fulfilling some of his unfulfilled desires through this murder.