Believing he's in a "kid-life crisis," James decides to take a day off from school, but it's repeatedly interrupted by a pesky door-to-door salesperson.
The day after James kills a fly, Mr. McFly reveals his grandmother is missing. Thinking he killed Grandma McFly, James scrambles to cover up his crime.
James and Max bond with their sentient toaster, Toasty, now Declan who is now going through puberty. But after an argument, Declan goes on a rampage around Dirt, and James, Max, and Echo are the only ones who can save Dirt.
When the parents in Dirt ban their kids from doing anything risky, James starts a pillow fight club for his peers to release all of their excess energy.
Mr. McFly promises the class pizza if they take care of a flour "baby" for the day. But James struggles to cope when Max bails on him for a new partner.
While sneaking into the teachers lounge to snag sweet treats, James is mistaken for a substitute teacher and faces the wrath of a competitive Mr. McFly.