Someone has stolen X Middle School's beloved mascot, Lobstee the Lobster. Time is running out for both Lobstee and the Bocce Team, and the key to finding him before time runs out might be X's resident psychic, Alistair Greystone.

Vallejo's nearing his second term test for Junior Commissioner, and in the meantime, a crime crops up involving "The Shredder", an anonymous criminal who shreds people's pet projects. Unfortunately, not a single one of the victims saw the Shredder's face. This seems like a job for Vallejo's old profiler partner, Frank Bishop, who was driven from the Safety Patrol in disgrace. He is tasked to deduce a pattern to the Shredder's crimes and discover who is next on the list.

Reformed thug Linus Santiago wows the crowd at the X Middle School Talent Show with his magic act. Unfortunately, his disappearing trick with Dewey Hubble's robotic dog Barcode goes horribly wrong and it won't reappear. Santiago refuses to tell the Safety Patrol how he did the trick due to the Magician's Code, but by doing so, he makes himself the prime suspect. Dewey is anxious to get his robotic dog back as it's a stepping stone to getting a real dog. However, when Barcode's collar is found in the lake, all hope could be lost—for both Dewey and Santiago.

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.

Four victims—Wilbur, Grover, Becca and Stella. Four bullies—Rochelle, Bryan, Fiona and Horace. Someone's fed up of people being made to feel small and scared and is targeting each victim's bully respectively. Despite not wanting to help bullies, Fillmore starts to investigate who would want to scare the bullies so much. The main suspects are the four victims, but the victim of each bully is proven to have an alibi.

Guildenstern, the Science Department's tarantula mascot, has been poisoned, and the prime suspect, Eric Orben, has escaped into the city. Fillmore is given a permit to go out and track him down, but he has to contend with a relentless opponent from his bad-boy past.