Mumei is confined in a classroom full of traps; trying to escape along with his comrades, they inadvertently activate otherworldly traps.

A mysterious examiner awakens from a 10,000-year slumber to discipline cheating students.

The testing continues even at 32,000 feet; Mumei and his classmates are especially challenged when their plane begins to experience mysterious turbulence.

Mumei and the others are thrilled with a pool day; however, their joy turns to horror when shadowy figures appear in the water.