Gus sneaks his father's extremely rare WWII toy plane out of the house to play with at recess and destroys it. After making a deal with Hustler Kid for a new one he becomes a hustler in training. Gus begins to enjoy his new profession.
The Gang notices that Mikey is frequently taken advantage of on the playground, but he shrugs off the abuse as part of his daily routine. The next day, though, all of the kids treat Mikey with deference.
Principal Prickly's wish of being a middle school principal comes true, but his replacements are an evil man named Dr. Slicer and his assistant Gilda, who are even worse.
A statue of Thaddeus the Third, is to be installed on the front lawn of the building, but the Gang inadvertently destroys it while using it as a new climbing structure after one of the workers fails to secure it.
After letting a fellow student in on her 'top secret' science fair project, Gretchen has to come to terms that the student steals the project as her own.
While trying to pick up a ball that rolled under a bench, Mikey rips his pants and his friends try to help him cover up the rip while they hide from Miss Finster who'll stop at nothing to find him and sew his pants.
Jared Smith, a new kid, comes to Third Street and isn't as average as the gang hopes when he's better than all the students at the things they are good at.
After being ignored by the student body, Menlo and Randall join forces and start blackmailing the kids to do them favors and it's up to T.J. and his friends to put a stop to the duo.
Gus is in charge of showing Yope, a Norwegian transfer student, around the school but begins hiding him from everyone when he realizes Yope doesn't know Gus is actually seen as a loser.
Mikey is about to turn ten years old, and he's scared. So scared, in fact that he reverts to his old childhood fan-dom for Bonky... the kind of show that nobody over the age of five should be into.
Miss Finster sprains her ankle and can't keep up with the kids during recess., T.J. is thrilled, as he knows that he can finally get away with all of his biggest schemes.
Mikey is declared the first-ever poet laureate of Third Street School, and is chosen to recite an original composition at a special ceremony honoring him. Determined to write his best work ever, Mikey turns to Menlo.
Mikey signs the kids up to visit a retirement home on the same day as "Señor Fusion Fest," and the Gang reluctantly agrees to the plan, hoping to leave early to go to the festival.
