High school student Yoshiro Kobayashi (Mahiro Takasugi) is the great-grandchild of the first president of the Boy Detectives Club. He enjoys time with his friends Watari (Gaku Sano) and Saya (Mayu Hotta). One day, the Fiend with Twenty Faces appears in front of Yoshiro. Mysterious cases then takes place in sequence.

A chef's life is disrupted by a chime that brings with it an increasing sense of dread.

Precocious tween Karin finds herself abandoned by her father in rural Japan. Living in a temple with her grandfather, she meets Anzu, a giant "ghost cat" and notorious layabout tasked with looking after her. Distrustful of her new guardian, Karin sabotages Anzu's odd jobs for the townsfolk and befriends the eccentric local forest spirits. In an effort to win Karin over, Anzu accidentally makes a deal with the devil, and all Hell breaks loose.