Grade school students fight against supernatural forces.

A ghost invades the school's bathrooms, and it's up to Satsuki and the gang to find out how to put it back to sleep; the old book left by Satsuki's mom just might be the ticket.

The school play is coming up, but the boy in the lead role is scared; he makes a wish for the gymnasium to catch fire, and it does; when the play moves to being held in the old schoolhouse, the boy wishes to be injured and he is.

While in the old schoolhouse, Satsuki hears a haunting melody drifting through the halls; the only trouble is the lack of a pianist; if Satsuki hears the melody a total of four times, she'll die; the gang saddles up to put the ghostly piano to sleep.

The gang helps Keiichiro train for a sports festival at school; a mysterious boy shows up at the track meet, running alongside Keiichiro.