The book revolves around Yuluvare, a personified spirit that inhabits the air and possesses a mischievous, unpredictable nature. It moves erratically, from the rooftops to the souls of others, and its identity is ambiguous, with various names like Beze, Rogi, Humi, or Dad being suggested. The narrative describes Yuluvare's unsettling presence, its ability to seemingly cause harm and spread fear, and its mysterious comings and goings. Despite the eerie descriptions and the taunting confrontation where Yuluvare threatens to devour fears and drag souls to Hell, the story emphasizes that the spirit is not truly frightening, especially if one chooses not to care. The story culminates in Yuluvare's sudden, inexplicable vanishing act after its menacing declaration, leaving the reader to ponder its next move and ultimate nature. The narrative concludes by revealing that Yuluvare is a rare entity and that the story itself is not meant to be scary, but rather a whimsical and imaginative portrayal of a peculiar, playful phantom. The characters are urged to spread powder on the floor to find its footprints and ultimately face its presence, though the overarching message is one of embracing the unknown and not succumbing to fear.