The substitute teacher is Jackie Chu, Brooklyn T. Guy didn't finish Kindergarten, so he had to go to Kindergarten too, or summer school since summer school is not finished, Penelope also go with her father, Mr. Winkle tries to sneak into school, but Brooklyn T. Guy tries to arrest Mr. Winkle, but Mr. Winkle is too powerful, but Alex and Annabelle is rescued. Summer School is over. At Jeffy's house, Randy says to Rose that he has a son named Mikey. Mikey is now Jeffy's little brother, and Marvin is suprised. Mikey lives with Rose due to Randy being too harsh. Marvin finds out that Jeffy is in Kindergarten. And all the other kids tell their parents that they are in Kindergarten. All the parents got angry, Cody sue the entire School for 1 trillion dollars. Judge Pooby is the judge as usual. Parents and Brooklyn T. Guy help the kids as lawers. The School lose against Cody, the only way for the School to not pay 1 trillion dollars is to send Cody, Junior, Joseph, Penelope, and Jeffy back to their classes at a right age. And to cancel Summer School for all students. The School did what Judge Pooby says, Cody is sad no Summer School, Junior and Joseph beat up Cody. Cody, Junior, Joseph, Penelope, and Jeffy have to go to high school due to them being pretty old. Judge Pooby is the principal of High School, some parents have old kids hear about that Cody, Junior, Joseph, Penelope, and Jeffy is going to High School, to be continued.