Dr. Sen, a famous doctor in Kalimpong, a hill station, buys a house named The Seventh Heaven .He is disturbed because of his daughter’s sudden but strange change of behavior .He meets with Manab, a patient who warns him about his garden which is mysterious. Dr. Sen ignores the words of Manab considering him an insane. At a friendly get-together Dr. Sen comes to know about the personal experience of Dr.Chatterjee and about the unbelievable abilities of Dr. Nachiketa. Dr. Chatterjee acquaints all how his son Soham mysteriously fell ill and how while travelling in the train they met Dr. Nachiketa and encountered the first ghostly phenomenon .Back home Soham becomes critical and was pained by the spirit .At a critical juncture Dr. Nachiketa turns up at the house of Dr.Chatterjee and saves Soham from the evil spirit. Then Dr. Nachiketa finds the reason behind the spirit’s haunting after Soham and performs the rituals to liberate the evil spirit. The story influences Dr. Sen .At home Soumi, the daughter of Dr. Sen, starts behaving strange at nights .She becomes a lost girl who is always attracted to the foggy garden. Dr. Sen and his wife finds that some dark shadows from the garden are trying to take their daughter into the garden. They make every effort to save their daughter but their every effort becomes futile .At last at a dire situation Dr. Sen decides to contact Dr. Chatterjee for the assistance of Dr.Nachiketa . Dr. Nachiketa promptly arrives and makes out what the problem is .He shows everyone about the access of the Dark Spirits in the garden and inside the house. Dr.Nachiketa explains their garden to be the portal to another realm which gives access to the entities of the other world. He explains how Soumi’s consciousness is trapped in that world. He arranges an astral experience for everyone and himself goes into that dark world to save Soumi’s inner self. He encounters a lot of the dark shadows but eventually saves Soumi.