There's something different about a new teacher in the school - Mr. Batrachian. He wears a brown leather suit and his eyes bulge out permanently while his tongue is always long and slimy. All the kids like their new teacher except for Joey and Nate who want to know the truth about the man. They know that he's mean. They know that he's creepy. And they know that sixth-graders are his favourite snack.

Fitz is uncontrollably transforming into an insane monster wreaking havoc all over.