Shinji Yagami (Yuma Nakayama) is a university student. He is easily frightened, due to seeing ghosts. He has feelings for Koyomi Nada (Haruka Shimazaki). To protect Koyomi Nada, Shinji and Koyomi joins the occult research group at their university. They try to solve a mystery of the haunted campus with members of their occult group.

Haunted Campus

In the dawn of the Meiji period, the Gokumonjou, an inescapable prison, has been established in the middle of an enormous lake to counter the soaring crime rates the new era has brought. Serving as the ferrymen are the famous Kumou brothers: the eccentric family head, Tenka; the reckless but noble second son, Soramaru; and the guileless youngest, Chuutarou. In spite of their grim work, the three lead relatively peaceful lives in the ever-cloudy town of Oumi, together with their housekeeper, Shirasu Kinjou. But buried in the long history of Oumi is the legend of the terrifying "Orochi," a serpentine beast that awakens every three hundred years in a human vessel. Unbeknownst to Soramaru and Chuutarou, the actual job of the Kumou family is to seal the Orochi away before it fully revives—or the world will be plunged into destruction. Amid the monster's next resurrection, the Kumou family must find the resolve to keep laughing under the clouds.

Laughing Under the Clouds

189 is a phone number to call when a child needs to be saved from an abusive situation. Children and adults can call that number, where they will be connected with the nearest child consultation center. Taiga Sakamoto works as a rookie child welfare officer. A girl that he worked with is being sent back to her mother. The girl was abused by her mother and stayed at a shelter. The next day, she loses her life. Taiga thinks about quitting his job. At this time, he receives a phone call from the hospital. A doctor calls him and tells him that a six-year-old girl's wounds looks as if they were caused by physical abuse. The abuser is assumed to be her father, but the girl's father denies any wrongdoing. Taiga and Attorney Shion Akiba try to prove that the girl was abused by her father.