A popular cheerleader, Alexis, goes missing from X Middle School, at the same time as dowdy computer nerd Galdys returns from a sabbatical. Fillmore and Third struggle to find the former, who has been completely vanished from the school's computer records.

Cast: Orlando Brown, Tara Strong, Horatio Sanz, Kyle Sullivan, Don LaFontaine, Lauren Storm, Hayden Panettiere, Raven-Symoné, Chris Marquette, Vincent Pastore, Debi Derryberry, Michael Welch