Alex and Justin need to figure out how to turn Max back to normal before Professor Crumbs finds out what they did. Unfortunately one of their attempts turns the Prof. into a young boy.

Cast: Selena Gomez, David Henrie, Jake T. Austin, Jennifer Stone, Maria Canals-Barrera, David DeLuise, Ian Abercrombie, L.J. Benet, Bill Chott, Jackie Evancho, Bailee Madison, McKaley Miller, Cameron Sanders, RJ Smith-Tillman