Komasan joins Komajiro for what he thinks is a festival, but is instead a night club where Komajiro is a popular regular known as K.J. and he has a human girlfriend. At the local hot spring (sentō), Nate and Whisper discover the Yo-kai Sproink is making the water incredibly hot. Later, the Yo-kai Babblong possesses Nate's homeroom teacher, making class unnecessarily long, and soon possesses Katie. On Alcatraz, Manjimutt finds friendship with an inmate named Charlie, until he is approached by a more imposing inmate.