In a Japanese prefecture rumored to be haunted, Ghost Sweeper Mikami comes to the rescue. Led by the ambitious and captivating Reiko Mikami, alongside her loyal yet lecherous companion Tadao Yokoshima, this peculiar paranormal detective agency tackles supernatural cases no one else dares touch. Amidst exorcising oni, yurei, and yokai, Tadao's attempts at wooing Reiko often backfire as she views him more as expendable help than a romantic interest. With a blend of absurdity and expertise, they unearth the secrets hidden within The Illustrated Bag of One Hundred Random Ghosts.