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 paranormal researcher searches obsessively for a cursed home where something terrible happened to a mother and her child long ago.

Akemi Yoshikawa discovers that her whole office is stuck in a time loop, repeating the same stressful work week over and over. Together with her colleagues she has to find out how to break the loop.