During an undercover sting operation, boxes of band candy were accidentally discovered in the lake. The candy is traced back to the Red Robins, seemingly a school club in the same manner as Girl Scouts who make record sales of their award-winning taffy. In reality, the Robins strong-arm their competition, and the Safety Patrol have been trying to catch them in the act for a long time. Ingrid goes undercover as a Red Robin, but Vallejo isn't convinced she's the right person for the job and suspects something might go wrong.

After accidentally destroying Folsom's birthday party, Fillmore and Ingrid are asked to do convention duty. However, the train convention experiences sabotage, leaving the entire convention ruined. Fillmore and Ingrid first suspect the RC Car Club to be behind it, but the evidence points in the other direction.

The heat is on from Student Council Representative Peabody to get illegal term papers off the street, but the perps always seem one step ahead of the Safety Patrol. After a botched raid and the sabotage of his bike, Fillmore turns to Sonny Lombard, his old partner from his bad-boy days. They track the papers back to Rudy Teravall, the Kingpin of Home Economics, but just as Fillmore and Ingrid get ready to move in on Rudy's gang, Peabody gets tipped off about bootleg hall passes in Fillmore's desk, resulting in Fillmore getting suspended from the force. Nonetheless, Fillmore is determined to find the term papers—with or without his badge.

Tina and Toby are the stars of the school at both dancing and smoit-collecting. Smoits are tokens found on dairy bars and packets of chips used to buy basically anything a kid could want once enough of them are saved up. The smoit stash goes missing, and Fillmore and Ingrid go undercover in X's steamy underground casino scene. They discover Toby's gambling debts, and he becomes the prime suspect, which destroys his dance partnership with Tina.

Spring break has arrived, so Fillmore's taking the time to visit his former partner, Wayne Liggett. In Wayne's new school, something about the Safety Patrol stinks. The prize pralines of the school have been stolen, and the prime suspect is their Patrol Sheriff Thrift—who just so happens to be the son of their principal.

Fillmore and Ingrid investigate the mysterious vanishing of a student named Alexis, only to find that all reports of her have vanished from the school, and she's even been taken out of pictures. Meanwhile, someone is working on a computer virus called Electric Haircut, which must be stopped before it causes any irreparable damage.

Facing expulsion under Principal Folsom's new "Three Strikes, You're Out" rule, Fillmore must protect the only person capable of clearing his name to a crime he has been framed for—the destruction of a giant Folsom statue made out of 12,000 pieces of macaroni.