Miss Nelson’s class is the worst behaved in the whole school. Spitballs flying across the room, paper airplanes sailing every which way and uncontrollable children send the gentle, long-suffering teacher, Miss Nelson, over the edge. But the students of Room 207 are in for a surprise when Miss Nelson turns up missing and is replaced by Viola Swamp, a scary substitute teacher who assigns homework from hell and wields her ruler like a sword! In desperation, the students set out to find their beloved Miss Nelson … but will they ever get her back?